RgbeImageParser.java
/*
* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.commons.imaging.formats.rgbe;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.image.BandedSampleModel;
import java.awt.image.BufferedImage;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferFloat;
import java.awt.image.Raster;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.commons.imaging.AbstractImageParser;
import org.apache.commons.imaging.ImageFormat;
import org.apache.commons.imaging.ImageFormats;
import org.apache.commons.imaging.ImageInfo;
import org.apache.commons.imaging.ImagingException;
import org.apache.commons.imaging.bytesource.ByteSource;
import org.apache.commons.imaging.common.ImageMetadata;
/**
* Parser for Radiance HDR images
*/
public class RgbeImageParser extends AbstractImageParser<RgbeImagingParameters> {
@Override
protected String[] getAcceptedExtensions() {
return ImageFormats.RGBE.getExtensions();
}
@Override
protected ImageFormat[] getAcceptedTypes() {
return new ImageFormat[] { ImageFormats.RGBE };
}
@Override
public BufferedImage getBufferedImage(final ByteSource byteSource, final RgbeImagingParameters params) throws ImagingException, IOException {
try (RgbeInfo info = new RgbeInfo(byteSource)) {
// It is necessary to create our own BufferedImage here as the
// org.apache.commons.imaging.common.IBufferedImageFactory interface does
// not expose this complexity
final DataBuffer buffer = new DataBufferFloat(info.getPixelData(), info.getWidth() * info.getHeight());
return new BufferedImage(
new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), false, false, Transparency.OPAQUE, buffer.getDataType()),
Raster.createWritableRaster(new BandedSampleModel(buffer.getDataType(), info.getWidth(), info.getHeight(), 3), buffer, new Point()), false,
null);
}
}
@Override
public String getDefaultExtension() {
return ImageFormats.RGBE.getDefaultExtension();
}
@Override
public RgbeImagingParameters getDefaultParameters() {
return new RgbeImagingParameters();
}
@Override
public byte[] getIccProfileBytes(final ByteSource byteSource, final RgbeImagingParameters params) throws ImagingException, IOException {
return null;
}
@Override
public ImageInfo getImageInfo(final ByteSource byteSource, final RgbeImagingParameters params) throws ImagingException, IOException {
try (RgbeInfo info = new RgbeInfo(byteSource)) {
return new ImageInfo(getName(), 32, // todo may be 64 if double?
new ArrayList<>(), ImageFormats.RGBE, getName(), info.getHeight(), "image/vnd.radiance", 1, -1, -1, -1, -1, info.getWidth(), false, false,
false, ImageInfo.ColorType.RGB, ImageInfo.CompressionAlgorithm.ADAPTIVE_RLE);
}
}
@Override
public Dimension getImageSize(final ByteSource byteSource, final RgbeImagingParameters params) throws ImagingException, IOException {
try (RgbeInfo info = new RgbeInfo(byteSource)) {
return new Dimension(info.getWidth(), info.getHeight());
}
}
@Override
public ImageMetadata getMetadata(final ByteSource byteSource, final RgbeImagingParameters params) throws ImagingException, IOException {
try (RgbeInfo info = new RgbeInfo(byteSource)) {
return info.getMetadata();
}
}
@Override
public String getName() {
return "Radiance HDR";
}
}