Java tutorial
/* * 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; } }