/*
* 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.jpeg;
import java.awt.Dimension;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.imaging.ImageFormat;
import org.apache.commons.imaging.ImageInfo;
import org.apache.commons.imaging.ImageParser;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.common.ByteOrder;
import org.apache.commons.imaging.common.IImageMetadata;
import org.apache.commons.imaging.common.bytesource.ByteSource;
import org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder;
import org.apache.commons.imaging.formats.jpeg.iptc.IptcParser;
import org.apache.commons.imaging.formats.jpeg.iptc.PhotoshopApp13Data;
import org.apache.commons.imaging.formats.jpeg.segments.App13Segment;
import org.apache.commons.imaging.formats.jpeg.segments.App14Segment;
import org.apache.commons.imaging.formats.jpeg.segments.App2Segment;
import org.apache.commons.imaging.formats.jpeg.segments.ComSegment;
import org.apache.commons.imaging.formats.jpeg.segments.DqtSegment;
import org.apache.commons.imaging.formats.jpeg.segments.GenericSegment;
import org.apache.commons.imaging.formats.jpeg.segments.JfifSegment;
import org.apache.commons.imaging.formats.jpeg.segments.Segment;
import org.apache.commons.imaging.formats.jpeg.segments.SofnSegment;
import org.apache.commons.imaging.formats.jpeg.segments.UnknownSegment;
import org.apache.commons.imaging.formats.jpeg.xmp.JpegXmpParser;
import org.apache.commons.imaging.formats.tiff.TiffField;
import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
import org.apache.commons.imaging.formats.tiff.TiffImageParser;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.imaging.util.Debug;
public class JpegImageParser extends ImageParser implements JpegConstants {
public JpegImageParser() {
setByteOrder(ByteOrder.BIG_ENDIAN);
// setDebug(true);
}
@Override
protected ImageFormat[] getAcceptedTypes() {
return new ImageFormat[] { ImageFormat.IMAGE_FORMAT_JPEG, //
};
}
@Override
public String getName() {
return "Jpeg-Custom";
}
@Override
public String getDefaultExtension() {
return DEFAULT_EXTENSION;
}
private static final String DEFAULT_EXTENSION = ".jpg";
private static final String ACCEPTED_EXTENSIONS[] = { ".jpg", ".jpeg", };
@Override
protected String[] getAcceptedExtensions() {
return ACCEPTED_EXTENSIONS;
}
@Override
public final BufferedImage getBufferedImage(final ByteSource byteSource,
final Map<String,Object> params) throws ImageReadException, IOException {
final JpegDecoder jpegDecoder = new JpegDecoder();
return jpegDecoder.decode(byteSource);
}
private boolean keepMarker(final int marker, final int markers[]) {
if (markers == null) {
return true;
}
for (final int marker2 : markers) {
if (marker2 == marker) {
return true;
}
}
return false;
}
public List<Segment> readSegments(final ByteSource byteSource,
final int markers[], final boolean returnAfterFirst,
final boolean readEverything) throws ImageReadException, IOException {
final List<Segment> result = new ArrayList<Segment>();
final JpegImageParser parser = this;
final int[] sofnSegments = {
// kJFIFMarker,
SOF0Marker,
SOF1Marker, SOF2Marker, SOF3Marker, SOF5Marker, SOF6Marker,
SOF7Marker, SOF9Marker, SOF10Marker, SOF11Marker, SOF13Marker,
SOF14Marker, SOF15Marker, };
final JpegUtils.Visitor visitor = new JpegUtils.Visitor() {
// return false to exit before reading image data.
public boolean beginSOS() {
return false;
}
public void visitSOS(final int marker, final byte markerBytes[],
final byte imageData[]) {
}
// return false to exit traversal.
public boolean visitSegment(final int marker, final byte markerBytes[],
final int markerLength, final byte markerLengthBytes[],
final byte segmentData[]) throws ImageReadException, IOException {
if (marker == EOIMarker) {
return false;
}
// Debug.debug("visitSegment marker", marker);
// // Debug.debug("visitSegment keepMarker(marker, markers)",
// keepMarker(marker, markers));
// Debug.debug("visitSegment keepMarker(marker, markers)",
// keepMarker(marker, markers));
if (!keepMarker(marker, markers)) {
return true;
}
if (marker == JPEG_APP13_Marker) {
// Debug.debug("app 13 segment data", segmentData.length);
result.add(new App13Segment(parser, marker, segmentData));
} else if (marker == JPEG_APP14_Marker) {
result.add(new App14Segment(marker, segmentData));
} else if (marker == JPEG_APP2_Marker) {
result.add(new App2Segment(marker, segmentData));
} else if (marker == JFIFMarker) {
result.add(new JfifSegment(marker, segmentData));
} else if (Arrays.binarySearch(sofnSegments, marker) >= 0) {
result.add(new SofnSegment(marker, segmentData));
} else if (marker == DQTMarker) {
result.add(new DqtSegment(marker, segmentData));
} else if ((marker >= JPEG_APP1_Marker)
&& (marker <= JPEG_APP15_Marker)) {
result.add(new UnknownSegment(marker, segmentData));
} else if (marker == COMMarker) {
result.add(new ComSegment(marker, segmentData));
}
if (returnAfterFirst) {
return false;
}
return true;
}
};
new JpegUtils().traverseJFIF(byteSource, visitor);
return result;
}
public static final boolean permissive = true;
private byte[] assembleSegments(final List<App2Segment> v)
throws ImageReadException {
try {
return assembleSegments(v, false);
} catch (final ImageReadException e) {
return assembleSegments(v, true);
}
}
private byte[] assembleSegments(final List<App2Segment> v, final boolean start_with_zero)
throws ImageReadException {
if (v.size() < 1) {
throw new ImageReadException("No App2 Segments Found.");
}
final int markerCount = v.get(0).num_markers;
// if (permissive && (markerCount == 0))
// markerCount = v.size();
if (v.size() != markerCount) {
throw new ImageReadException("App2 Segments Missing. Found: "
+ v.size() + ", Expected: " + markerCount + ".");
}
Collections.sort(v);
final int offset = start_with_zero ? 0 : 1;
int total = 0;
for (int i = 0; i < v.size(); i++) {
final App2Segment segment = v.get(i);
if ((i + offset) != segment.cur_marker) {
dumpSegments(v);
throw new ImageReadException(
"Incoherent App2 Segment Ordering. i: " + i
+ ", segment[" + i + "].cur_marker: "
+ segment.cur_marker + ".");
}
if (markerCount != segment.num_markers) {
dumpSegments(v);
throw new ImageReadException(
"Inconsistent App2 Segment Count info. markerCount: "
+ markerCount + ", segment[" + i
+ "].num_markers: " + segment.num_markers + ".");
}
total += segment.icc_bytes.length;
}
final byte result[] = new byte[total];
int progress = 0;
for (int i = 0; i < v.size(); i++) {
final App2Segment segment = v.get(i);
System.arraycopy(segment.icc_bytes, 0, result, progress,
segment.icc_bytes.length);
progress += segment.icc_bytes.length;
}
return result;
}
private void dumpSegments(final List<? extends Segment> v) {
Debug.debug();
Debug.debug("dumpSegments", v.size());
for (int i = 0; i < v.size(); i++) {
final App2Segment segment = (App2Segment) v.get(i);
Debug.debug((i) + ": " + segment.cur_marker + " / "
+ segment.num_markers);
}
Debug.debug();
}
public List<Segment> readSegments(final ByteSource byteSource, final int markers[],
final boolean returnAfterFirst) throws ImageReadException, IOException {
return readSegments(byteSource, markers, returnAfterFirst, false);
}
@Override
public byte[] getICCProfileBytes(final ByteSource byteSource, final Map<String,Object> params)
throws ImageReadException, IOException {
final List<Segment> segments = readSegments(byteSource,
new int[] { JPEG_APP2_Marker, }, false);
final List<App2Segment> filtered = new ArrayList<App2Segment>();
if (segments != null) {
// throw away non-icc profile app2 segments.
for (int i = 0; i < segments.size(); i++) {
final App2Segment segment = (App2Segment) segments.get(i);
if (segment.icc_bytes != null) {
filtered.add(segment);
}
}
}
if (filtered.size() < 1) {
return null;
}
final byte bytes[] = assembleSegments(filtered);
if (debug) {
System.out.println("bytes" + ": " + bytes.length);
}
if (debug) {
System.out.println("");
}
return (bytes);
}
@Override
public IImageMetadata getMetadata(final ByteSource byteSource, final Map<String,Object> params)
throws ImageReadException, IOException {
final TiffImageMetadata exif = getExifMetadata(byteSource, params);
final JpegPhotoshopMetadata photoshop = getPhotoshopMetadata(byteSource,
params);
if (null == exif && null == photoshop) {
return null;
}
final JpegImageMetadata result = new JpegImageMetadata(photoshop, exif);
return result;
}
public static boolean isExifAPP1Segment(final GenericSegment segment) {
return startsWith(segment.bytes, EXIF_IDENTIFIER_CODE);
}
private List<Segment> filterAPP1Segments(final List<Segment> v) {
final List<Segment> result = new ArrayList<Segment>();
for (int i = 0; i < v.size(); i++) {
final GenericSegment segment = (GenericSegment) v.get(i);
if (isExifAPP1Segment(segment)) {
result.add(segment);
}
}
return result;
}
public TiffImageMetadata getExifMetadata(final ByteSource byteSource, Map<String,Object> params)
throws ImageReadException, IOException {
final byte bytes[] = getExifRawData(byteSource);
if (null == bytes) {
return null;
}
if (params == null) {
params = new HashMap<String,Object>();
}
if (!params.containsKey(PARAM_KEY_READ_THUMBNAILS)) {
params.put(PARAM_KEY_READ_THUMBNAILS, Boolean.TRUE);
}
return (TiffImageMetadata) new TiffImageParser().getMetadata(bytes,
params);
}
public byte[] getExifRawData(final ByteSource byteSource)
throws ImageReadException, IOException {
final List<Segment> segments = readSegments(byteSource,
new int[] { JPEG_APP1_Marker, }, false);
if ((segments == null) || (segments.size() < 1)) {
return null;
}
final List<Segment> exifSegments = filterAPP1Segments(segments);
if (debug) {
System.out.println("exif_segments.size" + ": "
+ exifSegments.size());
}
// Debug.debug("segments", segments);
// Debug.debug("exifSegments", exifSegments);
// TODO: concatenate if multiple segments, need example.
if (exifSegments.size() < 1) {
return null;
}
if (exifSegments.size() > 1) {
throw new ImageReadException(
"Sanselan currently can't parse EXIF metadata split across multiple APP1 segments. "
+ "Please send this image to the Sanselan project.");
}
final GenericSegment segment = (GenericSegment) exifSegments.get(0);
final byte bytes[] = segment.bytes;
// byte head[] = readBytearray("exif head", bytes, 0, 6);
//
// Debug.debug("head", head);
return remainingBytes("trimmed exif bytes", bytes, 6);
}
public boolean hasExifSegment(final ByteSource byteSource)
throws ImageReadException, IOException {
final boolean result[] = { false, };
final JpegUtils.Visitor visitor = new JpegUtils.Visitor() {
// return false to exit before reading image data.
public boolean beginSOS() {
return false;
}
public void visitSOS(final int marker, final byte markerBytes[],
final byte imageData[]) {
}
// return false to exit traversal.
public boolean visitSegment(final int marker, final byte markerBytes[],
final int markerLength, final byte markerLengthBytes[],
final byte segmentData[]) throws ImageReadException, IOException {
if (marker == 0xffd9) {
return false;
}
if (marker == JPEG_APP1_Marker) {
if (startsWith(segmentData, EXIF_IDENTIFIER_CODE)) {
result[0] = true;
return false;
}
}
return true;
}
};
new JpegUtils().traverseJFIF(byteSource, visitor);
return result[0];
}
public boolean hasIptcSegment(final ByteSource byteSource)
throws ImageReadException, IOException {
final boolean result[] = { false, };
final JpegUtils.Visitor visitor = new JpegUtils.Visitor() {
// return false to exit before reading image data.
public boolean beginSOS() {
return false;
}
public void visitSOS(final int marker, final byte markerBytes[],
final byte imageData[]) {
}
// return false to exit traversal.
public boolean visitSegment(final int marker, final byte markerBytes[],
final int markerLength, final byte markerLengthBytes[],
final byte segmentData[]) throws ImageReadException, IOException {
if (marker == 0xffd9) {
return false;
}
if (marker == JPEG_APP13_Marker) {
if (new IptcParser().isPhotoshopJpegSegment(segmentData)) {
result[0] = true;
return false;
}
}
return true;
}
};
new JpegUtils().traverseJFIF(byteSource, visitor);
return result[0];
}
public boolean hasXmpSegment(final ByteSource byteSource)
throws ImageReadException, IOException {
final boolean result[] = { false, };
final JpegUtils.Visitor visitor = new JpegUtils.Visitor() {
// return false to exit before reading image data.
public boolean beginSOS() {
return false;
}
public void visitSOS(final int marker, final byte markerBytes[],
final byte imageData[]) {
}
// return false to exit traversal.
public boolean visitSegment(final int marker, final byte markerBytes[],
final int markerLength, final byte markerLengthBytes[],
final byte segmentData[]) throws ImageReadException, IOException {
if (marker == 0xffd9) {
return false;
}
if (marker == JPEG_APP1_Marker) {
if (new JpegXmpParser().isXmpJpegSegment(segmentData)) {
result[0] = true;
return false;
}
}
return true;
}
};
new JpegUtils().traverseJFIF(byteSource, visitor);
return result[0];
}
/**
* Extracts embedded XML metadata as XML string.
* <p>
*
* @param byteSource
* File containing image data.
* @param params
* Map of optional parameters, defined in SanselanConstants.
* @return Xmp Xml as String, if present. Otherwise, returns null.
*/
@Override
public String getXmpXml(final ByteSource byteSource, final Map<String,Object> params)
throws ImageReadException, IOException {
final List<String> result = new ArrayList<String>();
final JpegUtils.Visitor visitor = new JpegUtils.Visitor() {
// return false to exit before reading image data.
public boolean beginSOS() {
return false;
}
public void visitSOS(final int marker, final byte markerBytes[],
final byte imageData[]) {
}
// return false to exit traversal.
public boolean visitSegment(final int marker, final byte markerBytes[],
final int markerLength, final byte markerLengthBytes[],
final byte segmentData[]) throws ImageReadException, IOException {
if (marker == 0xffd9) {
return false;
}
if (marker == JPEG_APP1_Marker) {
if (new JpegXmpParser().isXmpJpegSegment(segmentData)) {
result.add(new JpegXmpParser()
.parseXmpJpegSegment(segmentData));
return false;
}
}
return true;
}
};
new JpegUtils().traverseJFIF(byteSource, visitor);
if (result.size() < 1) {
return null;
}
if (result.size() > 1) {
throw new ImageReadException(
"Jpeg file contains more than one XMP segment.");
}
return result.get(0);
}
public JpegPhotoshopMetadata getPhotoshopMetadata(final ByteSource byteSource,
final Map<String,Object> params) throws ImageReadException, IOException {
final List<Segment> segments = readSegments(byteSource,
new int[] { JPEG_APP13_Marker, }, false);
if ((segments == null) || (segments.size() < 1)) {
return null;
}
PhotoshopApp13Data photoshopApp13Data = null;
for (int i = 0; i < segments.size(); i++) {
final App13Segment segment = (App13Segment) segments.get(i);
final PhotoshopApp13Data data = segment.parsePhotoshopSegment(params);
if (data != null && photoshopApp13Data != null) {
throw new ImageReadException(
"Jpeg contains more than one Photoshop App13 segment.");
}
photoshopApp13Data = data;
}
if (null == photoshopApp13Data) {
return null;
}
return new JpegPhotoshopMetadata(photoshopApp13Data);
}
@Override
public Dimension getImageSize(final ByteSource byteSource, final Map<String,Object> params)
throws ImageReadException, IOException {
final List<Segment> segments = readSegments(byteSource, new int[] {
// kJFIFMarker,
SOF0Marker,
SOF1Marker, SOF2Marker, SOF3Marker, SOF5Marker, SOF6Marker,
SOF7Marker, SOF9Marker, SOF10Marker, SOF11Marker, SOF13Marker,
SOF14Marker, SOF15Marker,
}, true);
if ((segments == null) || (segments.size() < 1)) {
throw new ImageReadException("No JFIF Data Found.");
}
if (segments.size() > 1) {
throw new ImageReadException("Redundant JFIF Data Found.");
}
final SofnSegment fSOFNSegment = (SofnSegment) segments.get(0);
return new Dimension(fSOFNSegment.width, fSOFNSegment.height);
}
public byte[] embedICCProfile(final byte image[], final byte profile[]) {
return null;
}
@Override
public boolean embedICCProfile(final File src, final File dst, final byte profile[]) {
return false;
}
@Override
public ImageInfo getImageInfo(final ByteSource byteSource, final Map<String,Object> params)
throws ImageReadException, IOException {
// List allSegments = readSegments(byteSource, null, false);
final List<Segment> SOF_segments = readSegments(byteSource, new int[] {
// kJFIFMarker,
SOF0Marker, SOF1Marker, SOF2Marker, SOF3Marker, SOF5Marker,
SOF6Marker, SOF7Marker, SOF9Marker, SOF10Marker, SOF11Marker,
SOF13Marker, SOF14Marker, SOF15Marker,
}, false);
if (SOF_segments == null) {
throw new ImageReadException("No SOFN Data Found.");
}
// if (SOF_segments.size() != 1)
// System.out.println("Incoherent SOFN Data Found: "
// + SOF_segments.size());
final List<Segment> jfifSegments = readSegments(byteSource,
new int[] { JFIFMarker, }, true);
final SofnSegment fSOFNSegment = (SofnSegment) SOF_segments.get(0);
// SofnSegment fSOFNSegment = (SofnSegment) findSegment(segments,
// SOFNmarkers);
if (fSOFNSegment == null) {
throw new ImageReadException("No SOFN Data Found.");
}
final int Width = fSOFNSegment.width;
final int Height = fSOFNSegment.height;
JfifSegment jfifSegment = null;
if ((jfifSegments != null) && (jfifSegments.size() > 0)) {
jfifSegment = (JfifSegment) jfifSegments.get(0);
}
final List<Segment> app14Segments = readSegments(byteSource, new int[] { JPEG_APP14_Marker }, true);
App14Segment app14Segment = null;
if (app14Segments != null && !app14Segments.isEmpty()) {
app14Segment = (App14Segment) app14Segments.get(0);
}
// JfifSegment fTheJFIFSegment = (JfifSegment) findSegment(segments,
// kJFIFMarker);
double x_density = -1.0;
double y_density = -1.0;
double units_per_inch = -1.0;
// int JFIF_major_version;
// int JFIF_minor_version;
String FormatDetails;
if (jfifSegment != null) {
x_density = jfifSegment.xDensity;
y_density = jfifSegment.yDensity;
final int density_units = jfifSegment.densityUnits;
// JFIF_major_version = fTheJFIFSegment.JFIF_major_version;
// JFIF_minor_version = fTheJFIFSegment.JFIF_minor_version;
FormatDetails = "Jpeg/JFIF v." + jfifSegment.jfifMajorVersion + "."
+ jfifSegment.jfifMinorVersion;
switch (density_units) {
case 0:
break;
case 1: // inches
units_per_inch = 1.0;
break;
case 2: // cms
units_per_inch = 2.54;
break;
default:
break;
}
} else {
final JpegImageMetadata metadata = (JpegImageMetadata) getMetadata(
byteSource, params);
if (metadata != null) {
{
final TiffField field = metadata
.findEXIFValue(TiffTagConstants.TIFF_TAG_XRESOLUTION);
if (field != null) {
x_density = ((Number) field.getValue()).doubleValue();
}
}
{
final TiffField field = metadata
.findEXIFValue(TiffTagConstants.TIFF_TAG_YRESOLUTION);
if (field != null) {
y_density = ((Number) field.getValue()).doubleValue();
}
}
{
final TiffField field = metadata
.findEXIFValue(TiffTagConstants.TIFF_TAG_RESOLUTION_UNIT);
if (field != null) {
final int density_units = ((Number) field.getValue())
.intValue();
switch (density_units) {
case 1:
break;
case 2: // inches
units_per_inch = 1.0;
break;
case 3: // cms
units_per_inch = 2.54;
break;
default:
break;
}
}
}
}
FormatDetails = "Jpeg/DCM";
}
int PhysicalHeightDpi = -1;
float PhysicalHeightInch = -1;
int PhysicalWidthDpi = -1;
float PhysicalWidthInch = -1;
if (units_per_inch > 0) {
PhysicalWidthDpi = (int) Math.round(x_density * units_per_inch);
PhysicalWidthInch = (float) (Width / (x_density * units_per_inch));
PhysicalHeightDpi = (int) Math.round(y_density * units_per_inch);
PhysicalHeightInch = (float) (Height / (y_density * units_per_inch));
}
final List<String> Comments = new ArrayList<String>();
final List<Segment> commentSegments = readSegments(byteSource,
new int[] { COMMarker }, false);
for (int i = 0; i < commentSegments.size(); i++) {
final ComSegment comSegment = (ComSegment) commentSegments.get(i);
String comment = "";
try {
comment = new String(comSegment.comment, "UTF-8");
} catch (final UnsupportedEncodingException cannotHappen) {
}
Comments.add(comment);
}
final int Number_of_components = fSOFNSegment.numberOfComponents;
final int Precision = fSOFNSegment.precision;
final int BitsPerPixel = Number_of_components * Precision;
final ImageFormat Format = ImageFormat.IMAGE_FORMAT_JPEG;
final String FormatName = "JPEG (Joint Photographic Experts Group) Format";
final String MimeType = "image/jpeg";
// we ought to count images, but don't yet.
final int NumberOfImages = 1;
// not accurate ... only reflects first
final boolean isProgressive = fSOFNSegment.marker == SOF2Marker;
boolean isTransparent = false;
final boolean usesPalette = false; // TODO: inaccurate.
// See http://docs.oracle.com/javase/6/docs/api/javax/imageio/metadata/doc-files/jpeg_metadata.html#color
int colorType = ImageInfo.COLOR_TYPE_UNKNOWN;
// Some images have both JFIF/APP0 and APP14.
// JFIF is meant to win but in them APP14 is clearly right, so make it win.
if (app14Segment != null && app14Segment.isAdobeJpegSegment()) {
final int colorTransform = app14Segment.getAdobeColorTransform();
if (colorTransform == App14Segment.ADOBE_COLOR_TRANSFORM_UNKNOWN) {
if (Number_of_components == 3) {
colorType = ImageInfo.COLOR_TYPE_RGB;
} else if (Number_of_components == 4) {
colorType = ImageInfo.COLOR_TYPE_CMYK;
}
} else if (colorTransform == App14Segment.ADOBE_COLOR_TRANSFORM_YCbCr) {
colorType = ImageInfo.COLOR_TYPE_YCbCr;
} else if (colorTransform == App14Segment.ADOBE_COLOR_TRANSFORM_YCCK) {
colorType = ImageInfo.COLOR_TYPE_YCCK;
}
} else if (jfifSegment != null) {
if (Number_of_components == 1) {
colorType = ImageInfo.COLOR_TYPE_GRAYSCALE;
} else if (Number_of_components == 3) {
colorType = ImageInfo.COLOR_TYPE_YCbCr;
}
} else {
if (Number_of_components == 1) {
colorType = ImageInfo.COLOR_TYPE_GRAYSCALE;
} else if (Number_of_components == 2) {
colorType = ImageInfo.COLOR_TYPE_GRAYSCALE;
isTransparent = true;
} else if (Number_of_components == 3 || Number_of_components == 4) {
boolean have1 = false;
boolean have2 = false;
boolean have3 = false;
boolean have4 = false;
boolean haveOther = false;
for (final SofnSegment.Component component : fSOFNSegment.components) {
final int id = component.componentIdentifier;
if (id == 1) {
have1 = true;
} else if (id == 2) {
have2 = true;
} else if (id == 3) {
have3 = true;
} else if (id == 4) {
have4 = true;
} else {
haveOther = true;
}
}
if (Number_of_components == 3 && have1 && have2 && have3 && !have4 && !haveOther) {
colorType = ImageInfo.COLOR_TYPE_YCbCr;
} else if (Number_of_components == 4 && have1 && have2 && have3 && have4 && !haveOther) {
colorType = ImageInfo.COLOR_TYPE_YCbCr;
isTransparent = true;
} else {
boolean haveR = false;
boolean haveG = false;
boolean haveB = false;
boolean haveA = false;
boolean haveC = false;
boolean havec = false;
boolean haveY = false;
for (final SofnSegment.Component component : fSOFNSegment.components) {
final int id = component.componentIdentifier;
if (id == 'R') {
haveR = true;
} else if (id == 'G') {
haveG = true;
} else if (id == 'B') {
haveB = true;
} else if (id == 'A') {
haveA = true;
} else if (id == 'C') {
haveC = true;
} else if (id == 'c') {
havec = true;
} else if (id == 'Y') {
haveY = true;
}
}
if (haveR && haveG && haveB && !haveA && !haveC && !havec && !haveY) {
colorType = ImageInfo.COLOR_TYPE_RGB;
} else if (haveR && haveG && haveB && haveA && !haveC && !havec && !haveY) {
colorType = ImageInfo.COLOR_TYPE_RGB;
isTransparent = true;
} else if (haveY && haveC && havec && !haveR && !haveG && !haveB && !haveA) {
colorType = ImageInfo.COLOR_TYPE_YCC;
} else if (haveY && haveC && havec && haveA && !haveR && !haveG && !haveB) {
colorType = ImageInfo.COLOR_TYPE_YCC;
isTransparent = true;
} else {
int minHorizontalSamplingFactor = Integer.MAX_VALUE;
int maxHorizontalSmaplingFactor = Integer.MIN_VALUE;
int minVerticalSamplingFactor = Integer.MAX_VALUE;
int maxVerticalSamplingFactor = Integer.MIN_VALUE;
for (final SofnSegment.Component component : fSOFNSegment.components) {
if (minHorizontalSamplingFactor > component.horizontalSamplingFactor) {
minHorizontalSamplingFactor = component.horizontalSamplingFactor;
}
if (maxHorizontalSmaplingFactor < component.horizontalSamplingFactor) {
maxHorizontalSmaplingFactor = component.horizontalSamplingFactor;
}
if (minVerticalSamplingFactor > component.verticalSamplingFactor) {
minVerticalSamplingFactor = component.verticalSamplingFactor;
}
if (maxVerticalSamplingFactor < component.verticalSamplingFactor) {
maxVerticalSamplingFactor = component.verticalSamplingFactor;
}
}
final boolean isSubsampled = (minHorizontalSamplingFactor != maxHorizontalSmaplingFactor) ||
(minVerticalSamplingFactor != maxVerticalSamplingFactor);
if (Number_of_components == 3) {
if (isSubsampled) {
colorType = ImageInfo.COLOR_TYPE_YCbCr;
} else {
colorType = ImageInfo.COLOR_TYPE_RGB;
}
} else if (Number_of_components == 4) {
if (isSubsampled) {
colorType = ImageInfo.COLOR_TYPE_YCCK;
} else {
colorType = ImageInfo.COLOR_TYPE_CMYK;
}
}
}
}
}
}
final String compressionAlgorithm = ImageInfo.COMPRESSION_ALGORITHM_JPEG;
final ImageInfo result = new ImageInfo(FormatDetails, BitsPerPixel, Comments,
Format, FormatName, Height, MimeType, NumberOfImages,
PhysicalHeightDpi, PhysicalHeightInch, PhysicalWidthDpi,
PhysicalWidthInch, Width, isProgressive, isTransparent,
usesPalette, colorType, compressionAlgorithm);
return result;
}
// public ImageInfo getImageInfo(ByteSource byteSource, Map params)
// throws ImageReadException, IOException
// {
//
// List allSegments = readSegments(byteSource, null, false);
//
// final int SOF_MARKERS[] = new int[]{
// SOF0Marker, SOF1Marker, SOF2Marker, SOF3Marker, SOF5Marker,
// SOF6Marker, SOF7Marker, SOF9Marker, SOF10Marker, SOF11Marker,
// SOF13Marker, SOF14Marker, SOF15Marker,
// };
//
// List sofMarkers = new ArrayList();
// for(int i=0;i<SOF_MARKERS.length;i++)
// sofMarkers.add(new Integer(SOF_MARKERS[i]));
// List SOFSegments = filterSegments(allSegments, sofMarkers);
// if (SOFSegments == null || SOFSegments.size()<1)
// throw new ImageReadException("No SOFN Data Found.");
//
// List jfifMarkers = new ArrayList();
// jfifMarkers.add(new Integer(JFIFMarker));
// List jfifSegments = filterSegments(allSegments, jfifMarkers);
//
// SofnSegment firstSOFNSegment = (SofnSegment) SOFSegments.get(0);
//
// int Width = firstSOFNSegment.width;
// int Height = firstSOFNSegment.height;
//
// JfifSegment jfifSegment = null;
//
// if (jfifSegments != null && jfifSegments.size() > 0)
// jfifSegment = (JfifSegment) jfifSegments.get(0);
//
// double x_density = -1.0;
// double y_density = -1.0;
// double units_per_inch = -1.0;
// // int JFIF_major_version;
// // int JFIF_minor_version;
// String FormatDetails;
//
// if (jfifSegment != null)
// {
// x_density = jfifSegment.xDensity;
// y_density = jfifSegment.yDensity;
// int density_units = jfifSegment.densityUnits;
// // JFIF_major_version = fTheJFIFSegment.JFIF_major_version;
// // JFIF_minor_version = fTheJFIFSegment.JFIF_minor_version;
//
// FormatDetails = "Jpeg/JFIF v." + jfifSegment.jfifMajorVersion
// + "." + jfifSegment.jfifMinorVersion;
//
// switch (density_units)
// {
// case 0 :
// break;
// case 1 : // inches
// units_per_inch = 1.0;
// break;
// case 2 : // cms
// units_per_inch = 2.54;
// break;
// default :
// break;
// }
// }
// else
// {
// JpegImageMetadata metadata = (JpegImageMetadata) getMetadata(byteSource,
// params);
//
// {
// TiffField field = metadata
// .findEXIFValue(TiffField.TIFF_TAG_XRESOLUTION);
// if (field == null)
// throw new ImageReadException("No XResolution");
//
// x_density = ((Number) field.getValue()).doubleValue();
// }
// {
// TiffField field = metadata
// .findEXIFValue(TiffField.TIFF_TAG_YRESOLUTION);
// if (field == null)
// throw new ImageReadException("No YResolution");
//
// y_density = ((Number) field.getValue()).doubleValue();
// }
// {
// TiffField field = metadata
// .findEXIFValue(TiffField.TIFF_TAG_RESOLUTION_UNIT);
// if (field == null)
// throw new ImageReadException("No ResolutionUnits");
//
// int density_units = ((Number) field.getValue()).intValue();
//
// switch (density_units)
// {
// case 1 :
// break;
// case 2 : // inches
// units_per_inch = 1.0;
// break;
// case 3 : // cms
// units_per_inch = 2.54;
// break;
// default :
// break;
// }
//
// }
//
// FormatDetails = "Jpeg/DCM";
//
// }
//
// int PhysicalHeightDpi = -1;
// float PhysicalHeightInch = -1;
// int PhysicalWidthDpi = -1;
// float PhysicalWidthInch = -1;
//
// if (units_per_inch > 0)
// {
// PhysicalWidthDpi = (int) Math.round((double) x_density
// / units_per_inch);
// PhysicalWidthInch = (float) ((double) Width / (x_density *
// units_per_inch));
// PhysicalHeightDpi = (int) Math.round((double) y_density
// * units_per_inch);
// PhysicalHeightInch = (float) ((double) Height / (y_density *
// units_per_inch));
// }
//
// List Comments = new ArrayList();
// // TODO: comments...
//
// int Number_of_components = firstSOFNSegment.numberOfComponents;
// int Precision = firstSOFNSegment.precision;
//
// int BitsPerPixel = Number_of_components * Precision;
// ImageFormat Format = ImageFormat.IMAGE_FORMAT_JPEG;
// String FormatName = "JPEG (Joint Photographic Experts Group) Format";
// String MimeType = "image/jpeg";
// // we ought to count images, but don't yet.
// int NumberOfImages = -1;
// // not accurate ... only reflects first
// boolean isProgressive = firstSOFNSegment.marker == SOF2Marker;
//
// boolean isTransparent = false; // TODO: inaccurate.
// boolean usesPalette = false; // TODO: inaccurate.
// int ColorType;
// if (Number_of_components == 1)
// ColorType = ImageInfo.COLOR_TYPE_BW;
// else if (Number_of_components == 3)
// ColorType = ImageInfo.COLOR_TYPE_RGB;
// else if (Number_of_components == 4)
// ColorType = ImageInfo.COLOR_TYPE_CMYK;
// else
// ColorType = ImageInfo.COLOR_TYPE_UNKNOWN;
//
// String compressionAlgorithm = ImageInfo.COMPRESSION_ALGORITHM_JPEG;
//
// ImageInfo result = new ImageInfo(FormatDetails, BitsPerPixel, Comments,
// Format, FormatName, Height, MimeType, NumberOfImages,
// PhysicalHeightDpi, PhysicalHeightInch, PhysicalWidthDpi,
// PhysicalWidthInch, Width, isProgressive, isTransparent,
// usesPalette, ColorType, compressionAlgorithm);
//
// return result;
// }
@Override
public boolean dumpImageFile(final PrintWriter pw, final ByteSource byteSource)
throws ImageReadException, IOException {
pw.println("tiff.dumpImageFile");
{
final ImageInfo imageInfo = getImageInfo(byteSource);
if (imageInfo == null) {
return false;
}
imageInfo.toString(pw, "");
}
pw.println("");
{
final List<Segment> segments = readSegments(byteSource, null, false);
if (segments == null) {
throw new ImageReadException("No Segments Found.");
}
for (int d = 0; d < segments.size(); d++) {
final Segment segment = segments.get(d);
final NumberFormat nf = NumberFormat.getIntegerInstance();
// this.debugNumber("found, marker: ", marker, 4);
pw.println(d + ": marker: "
+ Integer.toHexString(segment.marker) + ", "
+ segment.getDescription() + " (length: "
+ nf.format(segment.length) + ")");
segment.dump(pw);
}
pw.println("");
}
return true;
}
}