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/*
This file is part of the iText (R) project.
Copyright (c) 1998-2022 iText Group NV
Authors: Bruno Lowagie, Paulo Soares, et al.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License version 3
as published by the Free Software Foundation with the addition of the
following permission added to Section 15 as permitted in Section 7(a):
FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
OF THIRD PARTY RIGHTS
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, see http://www.gnu.org/licenses or write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA, 02110-1301 USA, or download the license from the following URL:
http://itextpdf.com/terms-of-use/
The interactive user interfaces in modified source and object code versions
of this program must display Appropriate Legal Notices, as required under
Section 5 of the GNU Affero General Public License.
In accordance with Section 7(b) of the GNU Affero General Public License,
a covered work must retain the producer line in every PDF that is created
or manipulated using iText.
You can be released from the requirements of the license by purchasing
a commercial license. Buying such a license is mandatory as soon as you
develop commercial activities involving the iText software without
disclosing the source code of your own applications.
These activities include: offering paid services to customers as an ASP,
serving PDFs on the fly in a web application, shipping iText with a closed
source product.
For more information, please contact iText Software Corp. at this
address: [email protected]
*/
package com.itextpdf.io.image;
import com.itextpdf.io.exceptions.IOException;
import com.itextpdf.io.codec.CCITTG4Encoder;
import com.itextpdf.io.codec.TIFFFaxDecoder;
import com.itextpdf.io.util.UrlUtil;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public final class ImageDataFactory {
private ImageDataFactory() {
}
/**
* Create an ImageData instance representing the image from the image bytes.
* @param bytes byte representation of the image.
* @param recoverImage whether to recover from a image error (for TIFF-images)
* @return The created ImageData object.
*/
public static ImageData create(byte[] bytes, boolean recoverImage) {
return createImageInstance(bytes, recoverImage);
}
/**
* Create an ImageData instance representing the image from the image bytes.
* @param bytes byte representation of the image.
* @return The created ImageData object.
*/
public static ImageData create(byte[] bytes) {
return create(bytes, false);
}
/**
* Create an ImageData instance representing the image from the file located at the specified url.
* @param url location of the image
* @param recoverImage whether to recover from a image error (for TIFF-images)
* @return The created ImageData object.
*/
public static ImageData create(URL url, boolean recoverImage) {
return createImageInstance(url, recoverImage);
}
/**
* Create an ImageData instance representing the image from the file located at the specified url.
* @param url location of the image
* @return The created ImageData object.
*/
public static ImageData create(URL url) {
return create(url, false);
}
/**
* Create an ImageData instance representing the image from the specified file.
* @param filename filename of the file containing the image
* @param recoverImage whether to recover from a image error (for TIFF-images)
* @return The created ImageData object.
* @throws MalformedURLException if an error occurred generating the URL.
*/
public static ImageData create(String filename, boolean recoverImage) throws MalformedURLException {
return create(UrlUtil.toURL(filename), recoverImage);
}
/**
* Create an ImageData instance representing the image from the specified file.
* @param filename filename of the file containing the image
* @return The created ImageData object.
* @throws MalformedURLException if an error occurred generating the URL.
*/
public static ImageData create(String filename) throws MalformedURLException {
return create(filename, false);
}
/**
* Create an ImageData instance from the passed parameters.
*
* @param width width of the image in pixels
* @param height height of the image in pixels
* @param reverseBits whether to reverse the bits stored in data (TIFF images).
* @param typeCCITT Type of CCITT encoding
* @param parameters colour space parameters
* @param data array containing raw image data
* @param transparency array containing transparency information
* @return created ImageData object.
*/
public static ImageData create(int width, int height, boolean reverseBits,
int typeCCITT, int parameters, byte[] data,
int[] transparency) {
if (transparency != null && transparency.length != 2)
throw new IOException(IOException.TransparencyLengthMustBeEqualTo2WithCcittImages);
if (typeCCITT != RawImageData.CCITTG4 && typeCCITT != RawImageData.CCITTG3_1D && typeCCITT != RawImageData.CCITTG3_2D)
throw new IOException(IOException.CcittCompressionTypeMustBeCcittg4Ccittg3_1dOrCcittg3_2d);
if (reverseBits)
TIFFFaxDecoder.reverseBits(data);
RawImageData image = new RawImageData(data, ImageType.RAW);
image.setTypeCcitt(typeCCITT);
image.height = height;
image.width = width;
image.colorEncodingComponentsNumber = parameters;
image.transparency = transparency;
return image;
}
/**
* Create an ImageData instance from the passed parameters.
*
* @param width width of the image in pixels
* @param height height of the image in pixels
* @param components colour space components
* @param bpc bits per colour.
* @param data array containing raw image data
* @param transparency array containing transparency information
* @return created ImageData object.
*/
public static ImageData create(int width, int height, int components,
int bpc, byte[] data, int[] transparency) {
if (transparency != null && transparency.length != components * 2)
throw new IOException(IOException.TransparencyLengthMustBeEqualTo2WithCcittImages);
if (components == 1 && bpc == 1) {
byte[] g4 = CCITTG4Encoder.compress(data, width, height);
return ImageDataFactory.create(width, height, false, RawImageData.CCITTG4, RawImageData.CCITT_BLACKIS1, g4, transparency);
}
RawImageData image = new RawImageData(data, ImageType.RAW);
image.height = height;
image.width = width;
if (components != 1 && components != 3 && components != 4)
throw new IOException(IOException.ComponentsMustBe1_3Or4);
if (bpc != 1 && bpc != 2 && bpc != 4 && bpc != 8)
throw new IOException(IOException.BitsPerComponentMustBe1_2_4or8);
image.colorEncodingComponentsNumber = components;
image.bpc = bpc;
image.data = data;
image.transparency = transparency;
return image;
}
/**
* Get a bitmap ImageData instance from the specified url.
*
* @param url location of the image.
* @param noHeader Whether the image contains a header.
* @return created ImageData
*/
public static ImageData createBmp(URL url, boolean noHeader) {
validateImageType(url, ImageType.BMP);
final ImageData image = new BmpImageData(url, noHeader);
BmpImageHelper.processImage(image);
return image;
}
/**
* Get a bitmap ImageData instance from the provided bytes.
*
* @param bytes array containing the raw image data
* @param noHeader Whether the image contains a header.
* @return created ImageData
*/
public static ImageData createBmp(byte[] bytes, boolean noHeader) {
if (noHeader || ImageTypeDetector.detectImageType(bytes) == ImageType.BMP) {
ImageData image = new BmpImageData(bytes, noHeader);
BmpImageHelper.processImage(image);
return image;
}
throw new IllegalArgumentException("BMP image expected.");
}
/**
* Return a GifImage object. This object cannot be added to a document
*
* @param bytes array containing the raw image data
* @return GifImageData instance.
*/
public static GifImageData createGif(byte[] bytes) {
validateImageType(bytes, ImageType.GIF);
GifImageData image = new GifImageData(bytes);
GifImageHelper.processImage(image);
return image;
}
/**
* Returns a specified frame of the gif image
*
* @param url url of gif image
* @param frame number of frame to be returned, 1-based
* @return GifImageData instance.
*/
public static ImageData createGifFrame(URL url, int frame) {
return createGifFrames(url, new int[] {frame}).get(0);
}
/**
* Returns a specified frame of the gif image
*
* @param bytes byte array of gif image
* @param frame number of frame to be returned, 1-based
* @return GifImageData instance
*/
public static ImageData createGifFrame(byte[] bytes, int frame) {
return createGifFrames(bytes, new int[] {frame}).get(0);
}
/**
* Returns List of gif image frames
*
* @param bytes byte array of gif image
* @param frameNumbers array of frame numbers of gif image, 1-based
* @return all frames of gif image
*/
public static List createGifFrames(byte[] bytes, int[] frameNumbers) {
validateImageType(bytes, ImageType.GIF);
GifImageData image = new GifImageData(bytes);
return processGifImageAndExtractFrames(frameNumbers, image);
}
/**
* Returns List of gif image frames
*
* @param url url of gif image
* @param frameNumbers array of frame numbers of gif image, 1-based
* @return all frames of gif image
*/
public static List createGifFrames(URL url, int[] frameNumbers) {
validateImageType(url, ImageType.GIF);
GifImageData image = new GifImageData(url);
return processGifImageAndExtractFrames(frameNumbers, image);
}
/**
* Returns List of gif image frames
*
* @param bytes byte array of gif image
* @return all frames of gif image
*/
public static List createGifFrames(byte[] bytes) {
validateImageType(bytes, ImageType.GIF);
GifImageData image = new GifImageData(bytes);
GifImageHelper.processImage(image);
return image.getFrames();
}
/**
* Returns List of gif image frames
*
* @param url url of gif image
* @return all frames of gif image
*/
public static List createGifFrames(URL url) {
validateImageType(url, ImageType.GIF);
GifImageData image = new GifImageData(url);
GifImageHelper.processImage(image);
return image.getFrames();
}
public static ImageData createJbig2(URL url, int page) {
if (page < 1)
throw new IllegalArgumentException("The page number must be greater than 0");
validateImageType(url, ImageType.JBIG2);
ImageData image = new Jbig2ImageData(url, page);
Jbig2ImageHelper.processImage(image);
return image;
}
public static ImageData createJbig2(byte[] bytes, int page) {
if (page < 1)
throw new IllegalArgumentException("The page number must be greater than 0");
validateImageType(bytes, ImageType.JBIG2);
ImageData image = new Jbig2ImageData(bytes, page);
Jbig2ImageHelper.processImage(image);
return image;
}
/**
* Create an {@link ImageData} instance from a Jpeg image url
* @param url URL
* @return the created JPEG image
*/
public static ImageData createJpeg(URL url) {
validateImageType(url, ImageType.JPEG);
ImageData image = new JpegImageData(url);
JpegImageHelper.processImage(image);
return image;
}
public static ImageData createJpeg(byte[] bytes) {
validateImageType(bytes, ImageType.JPEG);
ImageData image = new JpegImageData(bytes);
JpegImageHelper.processImage(image);
return image;
}
public static ImageData createJpeg2000(URL url) {
validateImageType(url, ImageType.JPEG2000);
ImageData image = new Jpeg2000ImageData(url);
Jpeg2000ImageHelper.processImage(image);
return image;
}
public static ImageData createJpeg2000(byte[] bytes) {
validateImageType(bytes, ImageType.JPEG2000);
ImageData image = new Jpeg2000ImageData(bytes);
Jpeg2000ImageHelper.processImage(image);
return image;
}
public static ImageData createPng(URL url) {
validateImageType(url, ImageType.PNG);
ImageData image = new PngImageData(url);
PngImageHelper.processImage(image);
return image;
}
public static ImageData createPng(byte[] bytes) {
validateImageType(bytes, ImageType.PNG);
ImageData image = new PngImageData(bytes);
PngImageHelper.processImage(image);
return image;
}
public static ImageData createTiff(URL url, boolean recoverFromImageError, int page, boolean direct) {
validateImageType(url, ImageType.TIFF);
ImageData image = new TiffImageData(url, recoverFromImageError, page, direct);
TiffImageHelper.processImage(image);
return image;
}
public static ImageData createTiff(byte[] bytes, boolean recoverFromImageError, int page, boolean direct) {
validateImageType(bytes, ImageType.TIFF);
ImageData image = new TiffImageData(bytes, recoverFromImageError, page, direct);
TiffImageHelper.processImage(image);
return image;
}
public static ImageData createRawImage(byte[] bytes) {
return new RawImageData(bytes, ImageType.RAW);
}
/**
* Checks if the type of image (based on first 8 bytes) is supported by factory.
*
* Note: if this method returns {@code true} it doesn't means that {@link #create(byte[])} won't throw exception
*
* @param source image raw bytes
* @return {@code true} if first eight bytes are recognised by factory as valid image type and {@code false} otherwise
*/
public static boolean isSupportedType(byte[] source) {
if (source == null) {
return false;
}
ImageType imageType = ImageTypeDetector.detectImageType(source);
return isSupportedType(imageType);
}
/**
* Checks if the type of image (based on first 8 bytes) is supported by factory.
*
* Note: if this method returns {@code true} it doesn't means that {@link #create(byte[])} won't throw exception
*
* @param source image URL
* @return {@code true} if first eight bytes are recognised by factory as valid image type and {@code false} otherwise
*/
public static boolean isSupportedType(URL source) {
if (source == null) {
return false;
}
ImageType imageType = ImageTypeDetector.detectImageType(source);
return isSupportedType(imageType);
}
/**
* Checks if the type of image is supported by factory.
*
* Note: if this method returns {@code true} it doesn't means that {@link #create(byte[])} won't throw exception
*
* @param imageType image type
* @return {@code true} if image type is supported and {@code false} otherwise
*/
public static boolean isSupportedType(ImageType imageType) {
return imageType == ImageType.GIF || imageType == ImageType.JPEG || imageType == ImageType.JPEG2000
|| imageType == ImageType.PNG || imageType == ImageType.BMP || imageType == ImageType.TIFF
|| imageType == ImageType.JBIG2;
}
private static ImageData createImageInstance(URL source, boolean recoverImage) {
ImageType imageType = ImageTypeDetector.detectImageType(source);
switch (imageType) {
case GIF: {
GifImageData image = new GifImageData(source);
GifImageHelper.processImage(image, 0);
return image.getFrames().get(0);
}
case JPEG: {
ImageData image = new JpegImageData(source);
JpegImageHelper.processImage(image);
return image;
}
case JPEG2000: {
ImageData image = new Jpeg2000ImageData(source);
Jpeg2000ImageHelper.processImage(image);
return image;
}
case PNG: {
ImageData image = new PngImageData(source);
PngImageHelper.processImage(image);
return image;
}
case BMP: {
ImageData image = new BmpImageData(source, false);
BmpImageHelper.processImage(image);
return image;
}
case TIFF: {
ImageData image = new TiffImageData(source, recoverImage, 1, false);
TiffImageHelper.processImage(image);
return image;
}
case JBIG2: {
ImageData image = new Jbig2ImageData(source, 1);
Jbig2ImageHelper.processImage(image);
return image;
}
default:
throw new IOException(IOException.ImageFormatCannotBeRecognized);
}
}
private static ImageData createImageInstance(byte[] bytes, boolean recoverImage) {
ImageType imageType = ImageTypeDetector.detectImageType(bytes);
switch (imageType) {
case GIF: {
GifImageData image = new GifImageData(bytes);
GifImageHelper.processImage(image, 0);
return image.getFrames().get(0);
}
case JPEG: {
ImageData image = new JpegImageData(bytes);
JpegImageHelper.processImage(image);
return image;
}
case JPEG2000: {
ImageData image = new Jpeg2000ImageData(bytes);
Jpeg2000ImageHelper.processImage(image);
return image;
}
case PNG: {
ImageData image = new PngImageData(bytes);
PngImageHelper.processImage(image);
return image;
}
case BMP: {
ImageData image = new BmpImageData(bytes, false);
BmpImageHelper.processImage(image);
return image;
}
case TIFF: {
ImageData image = new TiffImageData(bytes, recoverImage, 1, false);
TiffImageHelper.processImage(image);
return image;
}
case JBIG2: {
ImageData image = new Jbig2ImageData(bytes, 1);
Jbig2ImageHelper.processImage(image);
return image;
}
default:
throw new IOException(IOException.ImageFormatCannotBeRecognized);
}
}
private static List processGifImageAndExtractFrames(int[] frameNumbers, GifImageData image) {
Arrays.sort(frameNumbers);
GifImageHelper.processImage(image, frameNumbers[frameNumbers.length - 1] - 1);
List frames = new ArrayList<>();
for (int frame : frameNumbers) {
frames.add(image.getFrames().get(frame - 1));
}
return frames;
}
private static void validateImageType(byte[] image, ImageType expectedType) {
ImageType detectedType = ImageTypeDetector.detectImageType(image);
if (detectedType != expectedType) {
throw new IllegalArgumentException(expectedType.name() +
" image expected. Detected image type: " + detectedType.name());
}
}
private static void validateImageType(URL imageUrl, ImageType expectedType) {
ImageType detectedType = ImageTypeDetector.detectImageType(imageUrl);
if (detectedType != expectedType) {
throw new IllegalArgumentException(expectedType.name() +
" image expected. Detected image type: " + detectedType.name());
}
}
}
