/*
* 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.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.nio.ByteOrder;
import java.util.ArrayList;
import java.util.Map;
import org.apache.commons.imaging.ImageFormat;
import org.apache.commons.imaging.ImageFormats;
import org.apache.commons.imaging.ImageInfo;
import org.apache.commons.imaging.ImageParser;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.common.IImageMetadata;
import org.apache.commons.imaging.common.bytesource.ByteSource;
import org.apache.commons.imaging.util.IoUtils;
/**
* Parser for Radiance HDR images
*
* @author <a href="mailto:peter@electrotank.com">peter royal</a>
*/
public class RgbeImageParser extends ImageParser {
public RgbeImageParser() {
setByteOrder(ByteOrder.BIG_ENDIAN);
}
@Override
public String getName() {
return "Radiance HDR";
}
@Override
public String getDefaultExtension() {
return ".hdr";
}
@Override
protected String[] getAcceptedExtensions() {
return new String[] { ".hdr", ".pic" };
}
@Override
protected ImageFormat[] getAcceptedTypes() {
return new ImageFormat[] { ImageFormats.RGBE };
}
@Override
public IImageMetadata getMetadata(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
final RgbeInfo info = new RgbeInfo(byteSource);
boolean canThrow = false;
try {
final IImageMetadata ret = info.getMetadata();
canThrow = true;
return ret;
} finally {
IoUtils.closeQuietly(canThrow, info);
}
}
@Override
public ImageInfo getImageInfo(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
final RgbeInfo info = new RgbeInfo(byteSource);
boolean canThrow = false;
try {
final ImageInfo ret = new ImageInfo(
getName(),
32, // todo may be 64 if double?
new ArrayList<String>(), ImageFormats.RGBE, getName(),
info.getHeight(), "image/vnd.radiance", 1, -1, -1, -1, -1,
info.getWidth(), false, false, false,
ImageInfo.COLOR_TYPE_RGB, "Adaptive RLE");
canThrow = true;
return ret;
} finally {
IoUtils.closeQuietly(canThrow, info);
}
}
@Override
public BufferedImage getBufferedImage(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
final RgbeInfo info = new RgbeInfo(byteSource);
boolean canThrow = false;
try {
// 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());
final BufferedImage ret = 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);
canThrow = true;
return ret;
} finally {
IoUtils.closeQuietly(canThrow, info);
}
}
@Override
public Dimension getImageSize(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
final RgbeInfo info = new RgbeInfo(byteSource);
boolean canThrow = false;
try {
final Dimension ret = new Dimension(info.getWidth(), info.getHeight());
canThrow = true;
return ret;
} finally {
IoUtils.closeQuietly(canThrow, info);
}
}
@Override
public byte[] getICCProfileBytes(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
return null;
}
@Override
public String getXmpXml(final ByteSource byteSource, final Map<String, Object> params)
throws ImageReadException, IOException {
return null;
}
}