TMI-CR2: Initial commit.

imageio/imageio-cr2/pom.xml

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2014, Harald Kuhr
+  ~ 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.
+  ~     * 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.
+  ~     * Neither the name "TwelveMonkeys" 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 COPYRIGHT OWNER 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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>imageio</artifactId>
+        <groupId>com.twelvemonkeys.imageio</groupId>
+        <version>3.1-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>imageio-cr2</artifactId>
+    <name>TwelveMonkeys :: ImageIO :: CR2 plugin</name>
+    <description>ImageIO plugin for Canon RAW (CR2) format.</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-core</artifactId>
+            <classifier>tests</classifier>
+        </dependency>
+        <dependency>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-metadata</artifactId>
+        </dependency>
+        <dependency>
+            <version>${project.version}</version>
+            <groupId>com.twelvemonkeys.imageio</groupId>
+            <artifactId>imageio-jpeg</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

imageio/imageio-cr2/src/main/java/com/twelvemonkeys/imageio/plugins/cr2/CR2ImageReader.java

@@ -0,0 +1,487 @@
+/*
+ * Copyright (c) 2014, Harald Kuhr
+ * 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.
+ *     * 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.
+ *     * Neither the name "TwelveMonkeys" 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 COPYRIGHT OWNER 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.
+ */
+
+package com.twelvemonkeys.imageio.plugins.cr2;
+
+import com.twelvemonkeys.imageio.ImageReaderBase;
+import com.twelvemonkeys.imageio.metadata.CompoundDirectory;
+import com.twelvemonkeys.imageio.metadata.Directory;
+import com.twelvemonkeys.imageio.metadata.Entry;
+import com.twelvemonkeys.imageio.metadata.exif.EXIFReader;
+import com.twelvemonkeys.imageio.metadata.exif.TIFF;
+import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegment;
+import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegmentUtil;
+import com.twelvemonkeys.imageio.plugins.jpeg.LosslessJPEGDecoder;
+import com.twelvemonkeys.imageio.stream.SubImageInputStream;
+
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+import java.awt.*;
+import java.awt.color.ColorSpace;
+import java.awt.image.*;
+import java.io.File;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Canon CR2 RAW ImageReader.
+ * <p/>
+ * Acknowledgement:
+ * This ImageReader is based on the excellent work of Laurent Clevy, and would probably not exist without it.
+ *
+ * @see <a href="http://lclevy.free.fr/dng/">Understanding What is stored in a Canon RAW .CR2 file, How and Why</a>
+ * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
+ * @author last modified by $Author: haraldk$
+ * @version $Id: CR2ImageReader.java,v 1.0 07.04.14 21:31 haraldk Exp$
+ */
+public final class CR2ImageReader extends ImageReaderBase {
+    // See http://lclevy.free.fr/dng/
+    // TODO: Avoid duped code from TIFFImageReader
+    // TODO: Probably a good idea to move some of the getAsShort/Int/Long/Array to TIFF/EXIF metadata module
+    // TODO: Automatic EXIF rotation, if we find a good way to do that for JPEG/EXIF/TIFF and keeping the metadata sane...
+
+    final static boolean DEBUG =  true; //"true".equalsIgnoreCase(System.getProperty("com.twelvemonkeys.imageio.plugins.dng.debug"));
+
+    // Thumbnail is in IFD1 (2nd entry)
+    private final static int THUMBNAIL_IFD = 1;
+
+    private CompoundDirectory IFDs;
+    private Directory currentIFD;
+
+    CR2ImageReader(final ImageReaderSpi provider) {
+        super(provider);
+    }
+
+    @Override
+    protected void resetMembers() {
+        IFDs = null;
+        currentIFD = null;
+    }
+
+    private void readMetadata() throws IOException {
+        if (imageInput == null) {
+            throw new IllegalStateException("input not set");
+        }
+
+        if (IFDs == null) {
+            // We'll validate the TIFF structure later, for now just see if we have 'CR'0x0200 at the right place
+
+            imageInput.skipBytes(8); // TIFF byte order mark + magic + IFD0 offset
+
+            if (imageInput.readByte() != 'C' || imageInput.readByte() != 'R') {
+                throw new IIOException("Not a valid CR2 structure: Missing CR magic ('CR')");
+            }
+
+            int version = imageInput.readUnsignedByte();
+            int revision = imageInput.readUnsignedByte();
+
+            // TODO: Choke on anything but 2.0? All sample data from 400D until 5D mk III has 2.0 version...
+
+            imageInput.seek(0);
+
+            IFDs = (CompoundDirectory) new EXIFReader().read(imageInput); // NOTE: Sets byte order as a side effect
+
+            if (DEBUG) {
+                System.err.println("Byte order: " + imageInput.getByteOrder());
+                System.err.println("Version: " + version + "." + revision);
+                System.err.println("Number of IFDs: " + IFDs.directoryCount());
+
+                for (int i = 0; i < IFDs.directoryCount(); i++) {
+                    System.err.printf("IFD %d: %s\n", i, IFDs.getDirectory(i));
+                }
+            }
+        }
+    }
+
+    private void readIFD(final int ifdIndex) throws IOException {
+        readMetadata();
+
+        if (ifdIndex < 0) {
+            throw new IndexOutOfBoundsException("index < minIndex");
+        }
+        else if (ifdIndex >= IFDs.directoryCount()) {
+            throw new IndexOutOfBoundsException("index >= numImages (" + ifdIndex + " >= " + IFDs.directoryCount() + ")");
+        }
+
+        currentIFD = IFDs.getDirectory(ifdIndex);
+    }
+
+    @Override
+    public int getNumImages(final boolean allowSearch) throws IOException {
+        readMetadata();
+
+        // This validation is maybe a little too restrictive, but ok for now
+        if (IFDs.directoryCount() != 4) {
+            throw new IIOException("Unexpected number of IFDs in CR2: " + IFDs.directoryCount());
+        }
+
+        return IFDs.directoryCount() - 1;
+    }
+
+    @Override
+    public int getNumThumbnails(int imageIndex) throws IOException {
+        readMetadata();
+        checkBounds(imageIndex);
+
+        return imageIndex == 0 ? 1 : 0;
+    }
+
+    @Override
+    public boolean readerSupportsThumbnails() {
+        return true;
+    }
+
+    @Override
+    public int getThumbnailWidth(int imageIndex, int thumbnailIndex) throws IOException {
+        readMetadata();
+        checkBounds(imageIndex);
+
+        // TODO: Need to get from JPEGImageReader (no ImageWidth tag), this is an ok (but lame) implementation for now
+        return super.getThumbnailWidth(imageIndex, thumbnailIndex);
+    }
+
+    @Override
+    public int getThumbnailHeight(int imageIndex, int thumbnailIndex) throws IOException {
+        readMetadata();
+        checkBounds(imageIndex);
+
+        // TODO: Need to get from JPEGImageReader (no ImageHeight tag), this is an ok (but lame) implementation for now
+        return super.getThumbnailHeight(imageIndex, thumbnailIndex);
+    }
+
+    @Override
+    public BufferedImage readThumbnail(int imageIndex, int thumbnailIndex) throws IOException {
+        readIFD(THUMBNAIL_IFD);
+
+        if (imageIndex != 0) {
+            throw new IndexOutOfBoundsException("No thumbnail for imageIndex: " + imageIndex);
+        }
+        if (thumbnailIndex != 0) {
+            throw new IndexOutOfBoundsException("thumbnailIndex out of bounds: " + thumbnailIndex);
+        }
+
+        // This IFD (IFD1) lacks Compression 6 (old JPEG), but has the relevant tags for a JPEG/EXIF thumbnail
+        int jpegOffset = getValueAsInt(TIFF.TAG_JPEG_INTERCHANGE_FORMAT, "JPEGInterchangeFormat");
+        int jpegLength = getValueAsInt(TIFF.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH, "JPEGInterchangeFormatLength");
+
+        imageInput.seek(jpegOffset);
+
+        // TODO: Consider using cached JPEGImageReader directly
+        return ImageIO.read(new SubImageInputStream(imageInput, jpegLength));
+    }
+
+    private long[] getValueAsLongArray(final int tag, final String tagName, boolean required) throws IIOException {
+        Entry entry = currentIFD.getEntryById(tag);
+        if (entry == null) {
+            if (required) {
+                throw new IIOException("Missing TIFF tag " + tagName);
+            }
+
+            return null;
+        }
+
+        long[] value;
+
+        if (entry.valueCount() == 1) {
+            // For single entries, this will be a boxed type
+            value = new long[] {((Number) entry.getValue()).longValue()};
+        }
+        else if (entry.getValue() instanceof short[]) {
+            short[] shorts = (short[]) entry.getValue();
+            value = new long[shorts.length];
+
+            for (int i = 0, length = value.length; i < length; i++) {
+                value[i] = shorts[i];
+            }
+        }
+        else if (entry.getValue() instanceof int[]) {
+            int[] ints = (int[]) entry.getValue();
+            value = new long[ints.length];
+
+            for (int i = 0, length = value.length; i < length; i++) {
+                value[i] = ints[i];
+            }
+        }
+        else if (entry.getValue() instanceof long[]) {
+            value = (long[]) entry.getValue();
+        }
+        else {
+            throw new IIOException(String.format("Unsupported %s type: %s (%s)", tagName, entry.getTypeName(), entry.getValue().getClass()));
+        }
+
+        return value;
+    }
+
+    private Number getValueAsNumberWithDefault(final int tag, final String tagName, final Number defaultValue) throws IIOException {
+        Entry entry = currentIFD.getEntryById(tag);
+
+        if (entry == null) {
+            if (defaultValue != null)  {
+                return defaultValue;
+            }
+
+            throw new IIOException("Missing TIFF tag: " + (tagName != null ? tagName : tag));
+        }
+
+        return (Number) entry.getValue();
+    }
+
+    private long getValueAsLongWithDefault(final int tag, final String tagName, final Long defaultValue) throws IIOException {
+        return getValueAsNumberWithDefault(tag, tagName, defaultValue).longValue();
+    }
+
+    private long getValueAsLongWithDefault(final int tag, final Long defaultValue) throws IIOException {
+        return getValueAsLongWithDefault(tag, null, defaultValue);
+    }
+
+    private int getValueAsIntWithDefault(final int tag, final String tagName, final Integer defaultValue) throws IIOException {
+        return getValueAsNumberWithDefault(tag, tagName, defaultValue).intValue();
+    }
+
+    private int getValueAsIntWithDefault(final int tag, Integer defaultValue) throws IIOException {
+        return getValueAsIntWithDefault(tag, null, defaultValue);
+    }
+
+    private int getValueAsInt(final int tag, String tagName) throws IIOException {
+        return getValueAsIntWithDefault(tag, tagName, null);
+    }
+
+    private int imageIndexToIFDNumber(int imageIndex) {
+        return imageIndex >= THUMBNAIL_IFD ? imageIndex + 1 : imageIndex;
+    }
+
+    @Override
+    public int getWidth(int imageIndex) throws IOException {
+        readIFD(imageIndexToIFDNumber(imageIndex));
+
+        return getValueAsInt(TIFF.TAG_IMAGE_WIDTH, "ImageWidth");
+    }
+
+    @Override
+    public int getHeight(int imageIndex) throws IOException {
+        readIFD(imageIndexToIFDNumber(imageIndex));
+
+        return getValueAsInt(TIFF.TAG_IMAGE_HEIGHT, "ImageHeight");
+    }
+
+    @Override
+    public Iterator<ImageTypeSpecifier> getImageTypes(int imageIndex) throws IOException {
+        readIFD(imageIndexToIFDNumber(imageIndex));
+
+        // TODO: For IFD0, get from JPEGImageReader delagate
+
+//        return Arrays.asList(ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_3BYTE_BGR)).iterator();
+        Entry bitsPerSample = currentIFD.getEntryById(TIFF.TAG_BITS_PER_SAMPLE);
+        if (bitsPerSample == null) {
+            // TODO: FixME!
+            return Arrays.asList(ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_3BYTE_BGR)).iterator();
+        }
+
+        // For IFD1, create linear RGB, but we don't really know...
+        int bitDepth = ((int[]) bitsPerSample.getValue())[0]; // Assume all equal!
+        if (bitDepth == 8) {
+            return Arrays.asList(ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_LINEAR_RGB), new int [] {0, 1, 2}, DataBuffer.TYPE_BYTE, false, false)).iterator();
+        }
+        else if (bitDepth == 16) {
+            return Arrays.asList(ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_LINEAR_RGB), new int [] {0, 1, 2}, DataBuffer.TYPE_USHORT, false, false)).iterator();
+        }
+
+        throw new IIOException("Unsupported bit depth: " + bitDepth);
+    }
+
+    @Override
+    public BufferedImage read(int imageIndex, ImageReadParam param) throws IOException {
+        readIFD(imageIndexToIFDNumber(imageIndex));
+
+        if (imageIndex == 0) {
+            // This one says Compression 6 (old JPEG) and contains normal JPEG data at StripOffsets (but has no JPEGInterchangeFormat tag)
+            int compression = getValueAsInt(TIFF.TAG_COMPRESSION, "Compression");
+            if (compression != 6) {
+                throw new IIOException("Unknown TIFF compression for CR2 IFD0: " + compression);
+            }
+
+            int stripOffsets = getValueAsInt(TIFF.TAG_STRIP_OFFSETS, "StripOffsets");
+            int stripByteCounts = getValueAsInt(TIFF.TAG_STRIP_BYTE_COUNTS, "StripByteCounts");
+            imageInput.seek(stripOffsets);
+
+            List<JPEGSegment> segments = JPEGSegmentUtil.readSegments(new SubImageInputStream(imageInput, stripByteCounts), JPEGSegmentUtil.ALL_SEGMENTS);
+            System.err.println("segments: " + segments);
+
+            imageInput.seek(stripOffsets);
+            BufferedImage image = ImageIO.read(new SubImageInputStream(imageInput, stripByteCounts));
+            System.err.println("image: " + image);
+            return image;
+        }
+
+        if (imageIndex == 1) {
+            // This one is semi-ok, for older cameras is says Compression 6 (old JPEG), for 7D it says Compression 1 (None)
+            // We'll just ignore the compression and assume it's 1 (None).
+            // TODO: Probably a good idea to verify that we have no other compression than 6/1
+            // TODO: Consider just masking out this image, as it's not of much use...
+
+            int width = getWidth(imageIndex);
+            int height = getHeight(imageIndex);
+
+            BufferedImage destination = getDestination(param, getImageTypes(imageIndex), width, height);
+            WritableRaster raster;
+
+            int dataType = destination.getSampleModel().getDataType();
+            if (dataType == DataBuffer.TYPE_BYTE) {
+                // Emulate raw type (as dest, but RGB instead of BGR)
+                raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, width, 1, width * 3, 3, new int[] {0, 1, 2}, null);
+            }
+            else if (dataType == DataBuffer.TYPE_USHORT) {
+                // Emulate raw type (as dest, but RGB instead of BGR)
+                raster = Raster.createInterleavedRaster(DataBuffer.TYPE_USHORT, width, 1, width * 3, 3, new int[] {0, 1, 2}, null);
+            }
+            else {
+                throw new AssertionError();
+            }
+
+            DataBuffer dataBuffer = raster.getDataBuffer();
+
+            SampleModel destSampleModel = destination.getSampleModel();
+            DataBuffer destBuffer = destination.getRaster().getDataBuffer();
+            SampleModel srcSampleModel = raster.getSampleModel();
+
+            if (destBuffer.getSize() != getValueAsInt(TIFF.TAG_STRIP_BYTE_COUNTS, "StripByteCounts")) {
+                System.err.println("dataBuffer: " + dataBuffer.getSize());
+                System.err.println("StripByteCounts: " + getValueAsInt(TIFF.TAG_STRIP_BYTE_COUNTS, "StripByteCounts"));
+            }
+
+            int stripOffsets = getValueAsInt(TIFF.TAG_STRIP_OFFSETS, "StripOffsets");
+            imageInput.seek(stripOffsets);
+
+            Object data = null;
+            for (int y = 0; y < height; y++) {
+                if (dataType == DataBuffer.TYPE_BYTE) {
+                    imageInput.readFully(((DataBufferByte) dataBuffer).getData());
+                }
+                else {
+                    imageInput.readFully(((DataBufferUShort) dataBuffer).getData(), 0, dataBuffer.getSize());
+                }
+
+                data = srcSampleModel.getDataElements(0, 0, width, 1, data, dataBuffer);
+                destSampleModel.setDataElements(0, y, width, 1, data, destBuffer);
+            }
+
+            // TODO: This seems to work as crop values, if so correct w/h from getImageWidth/Height??
+            Entry unknown = currentIFD.getEntryById(50908);
+            if (unknown != null) {
+                Graphics2D g = destination.createGraphics();
+                try {
+                    long[] values = (long[]) unknown.getValue();
+
+                    g.setPaint(new Color(63, 223, 88, 128));
+//                    g.drawRect((int) values[2], (int) values[3], (int) values[0], (int) values[1]);
+//                    g.fillRect((int) values[2], (int) values[3], (int) values[0], (int) values[1]);
+                    g.fillRect(0, 0, width, (int) values[3]);
+                    g.fillRect(0, (int) values[3], (int) values[2], (int) (values[1] + values[3]));
+                    g.fillRect((int) (values[2] + values[0]), (int) values[3], (int) values[2], (int) (values[1] + values[3]));
+                    g.fillRect(0, (int) (values[3] + values[1]), width, height - (int) (values[3] + values[1]));
+                }
+                finally {
+                    g.dispose();
+                }
+            }
+
+            return destination;
+        }
+
+        if (imageIndex == 2) {
+            // TODO: This is the real RAW data. It's supposed to be lossless JPEG encoded, single channel,
+            // and has to be interpolated to become full 3 channel data from the Bayer CFA array,
+            // then further processed with white balance correction, black subtraction and color scaling.
+            // At least. ;-)
+
+            // We should probably just mask this image out, until we can read it
+
+            int stripOffsets = getValueAsInt(TIFF.TAG_STRIP_OFFSETS, "StripOffsets");
+            int stripByteCounts = getValueAsInt(TIFF.TAG_STRIP_BYTE_COUNTS, "StripByteCounts");
+            long[] slices = getValueAsLongArray(50752, "Slices", true);
+
+            // Format of this array, is slices[0] = N, slices[1] = slice0.width ... slices[N + 1] = sliceN.width
+            if (slices[0] != slices.length - 2) {
+                throw new IIOException("Unexpected slices array: " + Arrays.toString(slices));
+            }
+            // TODO: We really have multiple slices...
+
+            // TODO: Get correct dimensions (sensor size?)
+            int width = getWidth(0);
+            int height = getHeight(0);
+
+            imageInput.seek(stripOffsets);
+            byte[] data = new LosslessJPEGDecoder().decompress(new SubImageInputStream(imageInput, stripByteCounts), null);
+
+            // TODO: We really have 2 bytes/sample
+            short[] data2 = new short[data.length / 2];
+            ByteBuffer wrap = ByteBuffer.wrap(data);
+            wrap.asShortBuffer().get(data2);
+
+            System.err.println("data.length: " + data2.length);
+            System.err.println("width x height: " + width * height);
+
+            DataBuffer dataBuffer = new DataBufferUShort(data2, data2.length);
+            WritableRaster raster = Raster.createInterleavedRaster(dataBuffer, width, height, width, 1, new int[] {0}, null);
+            ColorModel cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_GRAY), false, false, Transparency.OPAQUE, raster.getTransferType());
+            BufferedImage image = new BufferedImage(cm, raster, cm.isAlphaPremultiplied(), null);
+
+            System.err.println("image: " + image);
+
+            return image;
+        }
+
+        return null;
+    }
+
+    public static void main(String[] args) throws IOException {
+        CR2ImageReader reader = new CR2ImageReader(new CR2ImageReaderSpi());
+
+        for (String arg : args) {
+            ImageInputStream stream = ImageIO.createImageInputStream(new File(arg));
+            reader.setInput(stream);
+
+            int numImages = reader.getNumImages(true);
+            for (int i = 0; i < numImages; i++) {
+                int numThumbnails = reader.getNumThumbnails(i);
+                for (int n = 0; n < numThumbnails; n++) {
+                    showIt(reader.readThumbnail(i, n), arg + " image thumbnail" + n);
+                }
+
+                showIt(reader.read(i), arg + " image " + i);
+            }
+        }
+    }
+}

imageio/imageio-cr2/src/main/java/com/twelvemonkeys/imageio/plugins/cr2/CR2ImageReaderSpi.java

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2014, Harald Kuhr
+ * 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.
+ *     * 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.
+ *     * Neither the name "TwelveMonkeys" 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 COPYRIGHT OWNER 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.
+ */
+
+package com.twelvemonkeys.imageio.plugins.cr2;
+
+import com.twelvemonkeys.imageio.metadata.exif.TIFF;
+import com.twelvemonkeys.imageio.spi.ProviderInfo;
+import com.twelvemonkeys.imageio.util.IIOUtil;
+
+import javax.imageio.ImageReader;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+import java.io.IOException;
+import java.nio.ByteOrder;
+import java.util.Locale;
+
+/**
+ * CR2ImageReaderSpi
+ *
+ * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
+ * @author last modified by $Author: haraldk$
+ * @version $Id: CR2ImageReaderSpi.java,v 1.0 07.04.14 21:26 haraldk Exp$
+ */
+public final class CR2ImageReaderSpi extends ImageReaderSpi {
+    public CR2ImageReaderSpi() {
+        this(IIOUtil.getProviderInfo(CR2ImageReaderSpi.class));
+    }
+
+    private CR2ImageReaderSpi(final ProviderInfo pProviderInfo) {
+        super(
+                pProviderInfo.getVendorName(),
+                pProviderInfo.getVersion(),
+                new String[]{"cr2", "CR2"},
+                new String[]{"cr2"},
+                new String[]{
+                        "image/x-canon-raw",               // TODO: Look up
+                },
+                "com.twelvemonkeys.imageio.plugins.cr2.CR2ImageReader",
+                new Class[] {ImageInputStream.class},
+                null,
+                true, null, null, null, null,
+                true,
+                null, null,
+                null, null
+        );
+    }
+
+    public boolean canDecodeInput(final Object pSource) throws IOException {
+        if (!(pSource instanceof ImageInputStream)) {
+            return false;
+        }
+
+        ImageInputStream stream = (ImageInputStream) pSource;
+
+        stream.mark();
+        try {
+            byte[] bom = new byte[2];
+            stream.readFully(bom);
+
+            ByteOrder originalOrder = stream.getByteOrder();
+
+            try {
+                if (bom[0] == 'I' && bom[1] == 'I') {
+                    stream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
+                }
+                else if (bom[0] == 'M' && bom[1] == 'M') {
+                    stream.setByteOrder(ByteOrder.BIG_ENDIAN);
+                }
+                else  {
+                    return false;
+                }
+
+                int tiffMagic = stream.readUnsignedShort();
+                if (tiffMagic != TIFF.TIFF_MAGIC) {
+                    return false;
+                }
+
+                stream.skipBytes(4); // TIFF IFD0 offset
+
+                if (stream.readByte() != 'C' || stream.readByte() != 'R') {
+                    return false;
+                }
+
+                // Version 2.0
+                return stream.readUnsignedByte() == 2 && stream.readUnsignedByte() == 0;
+            }
+            finally {
+                stream.setByteOrder(originalOrder);
+            }
+        }
+        finally {
+            stream.reset();
+        }
+    }
+
+    @Override
+    public ImageReader createReaderInstance(Object extension) throws IOException {
+        return new CR2ImageReader(this);
+    }
+
+    @Override
+    public String getDescription(Locale locale) {
+        return "Canon RAW (CR2) format Reader";
+    }
+
+}

imageio/imageio-cr2/src/main/resources/META-INF/services/javax.imageio.spi.ImageReaderSpi

@@ -0,0 +1 @@
+com.twelvemonkeys.imageio.plugins.cr2.CR2ImageReaderSpi

imageio/imageio-cr2/src/test/java/com/twelvemonkeys/imageio/plugins/cr2/CR2ImageReaderTest.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2014, Harald Kuhr
+ * 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.
+ *     * 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.
+ *     * Neither the name "TwelveMonkeys" 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 COPYRIGHT OWNER 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.
+ */
+
+package com.twelvemonkeys.imageio.plugins.cr2;
+
+import com.twelvemonkeys.imageio.util.ImageReaderAbstractTestCase;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import javax.imageio.ImageReader;
+import javax.imageio.spi.ImageReaderSpi;
+import java.awt.*;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * CR2ImageReaderTest
+ *
+ * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
+ * @author last modified by $Author: haraldk$
+ * @version $Id: CR2ImageReaderTest.java,v 1.0 07.04.14 21:52 haraldk Exp$
+ */
+@Ignore
+public class CR2ImageReaderTest extends ImageReaderAbstractTestCase {
+    @Override
+    protected List<TestData> getTestData() {
+        return Arrays.asList(
+                new TestData(
+                        getClassLoaderResource("/cr2/IMG_3483.CR2"), // Canon EOS 400D
+                        new Dimension(3888, 2592) // This is what the TIFF structure says...
+                        /* from http://lclevy.free.fr/dng/:
+                        new Dimension(3888 / 4, 2592 / 4), // The image is supposed to be 1/4 of the size in the TIFF tags...
+                        new Dimension(-1, -1), // "small version", no size information, only JPEG data (EXIF thumbnail)
+                        new Dimension(384, 256), // according to http://lclevy.free.fr/dng/ this is not compressed, but TIFF structure says JPEG... Perhaps JPEG lossless?
+                        new Dimension(3888, 2592) // Full size image, no size information
+                        */
+                )
+                // TODO: EOS 7D sample
+        );
+    }
+
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new CR2ImageReaderSpi();
+    }
+
+    @Override
+    protected ImageReader createReader() {
+        return new CR2ImageReader(createProvider());
+    }
+
+    @Override
+    protected Class getReaderClass() {
+        return CR2ImageReader.class;
+    }
+
+    @Override
+    protected List<String> getFormatNames() {
+        return Arrays.asList("cr2");
+    }
+
+    @Override
+    protected List<String> getSuffixes() {
+        return Arrays.asList("cr2");
+    }
+
+    @Override
+    protected List<String> getMIMETypes() {
+        return Arrays.asList("image/x-canon-raw");
+    }
+
+    @Test
+    @Ignore("Known issue: Subsampled reading not supported")
+    @Override
+    public void testReadWithSubsampleParamPixels() throws IOException {
+        super.testReadWithSubsampleParamPixels();
+    }
+
+    @Test
+    @Ignore("Known issue: Source region reading not supported")
+    @Override
+    public void testReadWithSourceRegionParamEqualImage() throws IOException {
+        super.testReadWithSourceRegionParamEqualImage();
+    }
+}

imageio/imageio-cr2/src/test/resources/cr2/readme.txt

@@ -0,0 +1,7 @@
+Contents:
+IMG_3483.CR2 - Rusty chain at Vækerø harbour, Oslo, Norway, Canon 400D, by me
+IMG_4841.CR2 - Chimneys at Casa Mila, Barcelona, Spain, Canon 400D, by me
+IMG_6933.CR2 - Panda PEZ dispenser at home, Oslo Noway, Canon 7D, by me
+
+Above mentioned images are freely distributable for testing purposes.
+-- Harald K