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diff --git a/WallpaperPicker/src/com/android/gallery3d/exif/ExifInterface.java b/WallpaperPicker/src/com/android/gallery3d/exif/ExifInterface.java
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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed 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 com.android.gallery3d.exif;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.util.SparseIntArray;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.FileChannel.MapMode;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.TimeZone;
+
+/**
+ * This class provides methods and constants for reading and writing jpeg file
+ * metadata. It contains a collection of ExifTags, and a collection of
+ * definitions for creating valid ExifTags. The collection of ExifTags can be
+ * updated by: reading new ones from a file, deleting or adding existing ones,
+ * or building new ExifTags from a tag definition. These ExifTags can be written
+ * to a valid jpeg image as exif metadata.
+ * <p>
+ * Each ExifTag has a tag ID (TID) and is stored in a specific image file
+ * directory (IFD) as specified by the exif standard. A tag definition can be
+ * looked up with a constant that is a combination of TID and IFD. This
+ * definition has information about the type, number of components, and valid
+ * IFDs for a tag.
+ *
+ * @see ExifTag
+ */
+public class ExifInterface {
+ public static final int TAG_NULL = -1;
+ public static final int IFD_NULL = -1;
+ public static final int DEFINITION_NULL = 0;
+
+ /**
+ * Tag constants for Jeita EXIF 2.2
+ */
+
+ // IFD 0
+ public static final int TAG_IMAGE_WIDTH =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0100);
+ public static final int TAG_IMAGE_LENGTH =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0101); // Image height
+ public static final int TAG_BITS_PER_SAMPLE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0102);
+ public static final int TAG_COMPRESSION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0103);
+ public static final int TAG_PHOTOMETRIC_INTERPRETATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0106);
+ public static final int TAG_IMAGE_DESCRIPTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x010E);
+ public static final int TAG_MAKE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x010F);
+ public static final int TAG_MODEL =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0110);
+ public static final int TAG_STRIP_OFFSETS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0111);
+ public static final int TAG_ORIENTATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0112);
+ public static final int TAG_SAMPLES_PER_PIXEL =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0115);
+ public static final int TAG_ROWS_PER_STRIP =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0116);
+ public static final int TAG_STRIP_BYTE_COUNTS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0117);
+ public static final int TAG_X_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011A);
+ public static final int TAG_Y_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011B);
+ public static final int TAG_PLANAR_CONFIGURATION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x011C);
+ public static final int TAG_RESOLUTION_UNIT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0128);
+ public static final int TAG_TRANSFER_FUNCTION =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x012D);
+ public static final int TAG_SOFTWARE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0131);
+ public static final int TAG_DATE_TIME =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0132);
+ public static final int TAG_ARTIST =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013B);
+ public static final int TAG_WHITE_POINT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013E);
+ public static final int TAG_PRIMARY_CHROMATICITIES =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x013F);
+ public static final int TAG_Y_CB_CR_COEFFICIENTS =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0211);
+ public static final int TAG_Y_CB_CR_SUB_SAMPLING =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0212);
+ public static final int TAG_Y_CB_CR_POSITIONING =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0213);
+ public static final int TAG_REFERENCE_BLACK_WHITE =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x0214);
+ public static final int TAG_COPYRIGHT =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8298);
+ public static final int TAG_EXIF_IFD =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8769);
+ public static final int TAG_GPS_IFD =
+ defineTag(IfdId.TYPE_IFD_0, (short) 0x8825);
+ // IFD 1
+ public static final int TAG_JPEG_INTERCHANGE_FORMAT =
+ defineTag(IfdId.TYPE_IFD_1, (short) 0x0201);
+ public static final int TAG_JPEG_INTERCHANGE_FORMAT_LENGTH =
+ defineTag(IfdId.TYPE_IFD_1, (short) 0x0202);
+ // IFD Exif Tags
+ public static final int TAG_EXPOSURE_TIME =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x829A);
+ public static final int TAG_F_NUMBER =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x829D);
+ public static final int TAG_EXPOSURE_PROGRAM =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8822);
+ public static final int TAG_SPECTRAL_SENSITIVITY =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8824);
+ public static final int TAG_ISO_SPEED_RATINGS =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8827);
+ public static final int TAG_OECF =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x8828);
+ public static final int TAG_EXIF_VERSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9000);
+ public static final int TAG_DATE_TIME_ORIGINAL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9003);
+ public static final int TAG_DATE_TIME_DIGITIZED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9004);
+ public static final int TAG_COMPONENTS_CONFIGURATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9101);
+ public static final int TAG_COMPRESSED_BITS_PER_PIXEL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9102);
+ public static final int TAG_SHUTTER_SPEED_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9201);
+ public static final int TAG_APERTURE_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9202);
+ public static final int TAG_BRIGHTNESS_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9203);
+ public static final int TAG_EXPOSURE_BIAS_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9204);
+ public static final int TAG_MAX_APERTURE_VALUE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9205);
+ public static final int TAG_SUBJECT_DISTANCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9206);
+ public static final int TAG_METERING_MODE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9207);
+ public static final int TAG_LIGHT_SOURCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9208);
+ public static final int TAG_FLASH =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9209);
+ public static final int TAG_FOCAL_LENGTH =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x920A);
+ public static final int TAG_SUBJECT_AREA =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9214);
+ public static final int TAG_MAKER_NOTE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x927C);
+ public static final int TAG_USER_COMMENT =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9286);
+ public static final int TAG_SUB_SEC_TIME =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9290);
+ public static final int TAG_SUB_SEC_TIME_ORIGINAL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9291);
+ public static final int TAG_SUB_SEC_TIME_DIGITIZED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0x9292);
+ public static final int TAG_FLASHPIX_VERSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA000);
+ public static final int TAG_COLOR_SPACE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA001);
+ public static final int TAG_PIXEL_X_DIMENSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA002);
+ public static final int TAG_PIXEL_Y_DIMENSION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA003);
+ public static final int TAG_RELATED_SOUND_FILE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA004);
+ public static final int TAG_INTEROPERABILITY_IFD =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA005);
+ public static final int TAG_FLASH_ENERGY =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20B);
+ public static final int TAG_SPATIAL_FREQUENCY_RESPONSE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20C);
+ public static final int TAG_FOCAL_PLANE_X_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20E);
+ public static final int TAG_FOCAL_PLANE_Y_RESOLUTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA20F);
+ public static final int TAG_FOCAL_PLANE_RESOLUTION_UNIT =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA210);
+ public static final int TAG_SUBJECT_LOCATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA214);
+ public static final int TAG_EXPOSURE_INDEX =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA215);
+ public static final int TAG_SENSING_METHOD =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA217);
+ public static final int TAG_FILE_SOURCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA300);
+ public static final int TAG_SCENE_TYPE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA301);
+ public static final int TAG_CFA_PATTERN =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA302);
+ public static final int TAG_CUSTOM_RENDERED =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA401);
+ public static final int TAG_EXPOSURE_MODE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA402);
+ public static final int TAG_WHITE_BALANCE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA403);
+ public static final int TAG_DIGITAL_ZOOM_RATIO =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA404);
+ public static final int TAG_FOCAL_LENGTH_IN_35_MM_FILE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA405);
+ public static final int TAG_SCENE_CAPTURE_TYPE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA406);
+ public static final int TAG_GAIN_CONTROL =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA407);
+ public static final int TAG_CONTRAST =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA408);
+ public static final int TAG_SATURATION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA409);
+ public static final int TAG_SHARPNESS =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40A);
+ public static final int TAG_DEVICE_SETTING_DESCRIPTION =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40B);
+ public static final int TAG_SUBJECT_DISTANCE_RANGE =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA40C);
+ public static final int TAG_IMAGE_UNIQUE_ID =
+ defineTag(IfdId.TYPE_IFD_EXIF, (short) 0xA420);
+ // IFD GPS tags
+ public static final int TAG_GPS_VERSION_ID =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 0);
+ public static final int TAG_GPS_LATITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 1);
+ public static final int TAG_GPS_LATITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 2);
+ public static final int TAG_GPS_LONGITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 3);
+ public static final int TAG_GPS_LONGITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 4);
+ public static final int TAG_GPS_ALTITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 5);
+ public static final int TAG_GPS_ALTITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 6);
+ public static final int TAG_GPS_TIME_STAMP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 7);
+ public static final int TAG_GPS_SATTELLITES =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 8);
+ public static final int TAG_GPS_STATUS =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 9);
+ public static final int TAG_GPS_MEASURE_MODE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 10);
+ public static final int TAG_GPS_DOP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 11);
+ public static final int TAG_GPS_SPEED_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 12);
+ public static final int TAG_GPS_SPEED =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 13);
+ public static final int TAG_GPS_TRACK_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 14);
+ public static final int TAG_GPS_TRACK =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 15);
+ public static final int TAG_GPS_IMG_DIRECTION_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 16);
+ public static final int TAG_GPS_IMG_DIRECTION =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 17);
+ public static final int TAG_GPS_MAP_DATUM =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 18);
+ public static final int TAG_GPS_DEST_LATITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 19);
+ public static final int TAG_GPS_DEST_LATITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 20);
+ public static final int TAG_GPS_DEST_LONGITUDE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 21);
+ public static final int TAG_GPS_DEST_LONGITUDE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 22);
+ public static final int TAG_GPS_DEST_BEARING_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 23);
+ public static final int TAG_GPS_DEST_BEARING =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 24);
+ public static final int TAG_GPS_DEST_DISTANCE_REF =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 25);
+ public static final int TAG_GPS_DEST_DISTANCE =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 26);
+ public static final int TAG_GPS_PROCESSING_METHOD =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 27);
+ public static final int TAG_GPS_AREA_INFORMATION =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 28);
+ public static final int TAG_GPS_DATE_STAMP =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 29);
+ public static final int TAG_GPS_DIFFERENTIAL =
+ defineTag(IfdId.TYPE_IFD_GPS, (short) 30);
+ // IFD Interoperability tags
+ public static final int TAG_INTEROPERABILITY_INDEX =
+ defineTag(IfdId.TYPE_IFD_INTEROPERABILITY, (short) 1);
+
+ /**
+ * Tags that contain offset markers. These are included in the banned
+ * defines.
+ */
+ private static HashSet<Short> sOffsetTags = new HashSet<Short>();
+ static {
+ sOffsetTags.add(getTrueTagKey(TAG_GPS_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_EXIF_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_JPEG_INTERCHANGE_FORMAT));
+ sOffsetTags.add(getTrueTagKey(TAG_INTEROPERABILITY_IFD));
+ sOffsetTags.add(getTrueTagKey(TAG_STRIP_OFFSETS));
+ }
+
+ /**
+ * Tags with definitions that cannot be overridden (banned defines).
+ */
+ protected static HashSet<Short> sBannedDefines = new HashSet<Short>(sOffsetTags);
+ static {
+ sBannedDefines.add(getTrueTagKey(TAG_NULL));
+ sBannedDefines.add(getTrueTagKey(TAG_JPEG_INTERCHANGE_FORMAT_LENGTH));
+ sBannedDefines.add(getTrueTagKey(TAG_STRIP_BYTE_COUNTS));
+ }
+
+ /**
+ * Returns the constant representing a tag with a given TID and default IFD.
+ */
+ public static int defineTag(int ifdId, short tagId) {
+ return (tagId & 0x0000ffff) | (ifdId << 16);
+ }
+
+ /**
+ * Returns the TID for a tag constant.
+ */
+ public static short getTrueTagKey(int tag) {
+ // Truncate
+ return (short) tag;
+ }
+
+ /**
+ * Returns the default IFD for a tag constant.
+ */
+ public static int getTrueIfd(int tag) {
+ return tag >>> 16;
+ }
+
+ /**
+ * Constants for {@link TAG_ORIENTATION}. They can be interpreted as
+ * follows:
+ * <ul>
+ * <li>TOP_LEFT is the normal orientation.</li>
+ * <li>TOP_RIGHT is a left-right mirror.</li>
+ * <li>BOTTOM_LEFT is a 180 degree rotation.</li>
+ * <li>BOTTOM_RIGHT is a top-bottom mirror.</li>
+ * <li>LEFT_TOP is mirrored about the top-left<->bottom-right axis.</li>
+ * <li>RIGHT_TOP is a 90 degree clockwise rotation.</li>
+ * <li>LEFT_BOTTOM is mirrored about the top-right<->bottom-left axis.</li>
+ * <li>RIGHT_BOTTOM is a 270 degree clockwise rotation.</li>
+ * </ul>
+ */
+ public static interface Orientation {
+ public static final short TOP_LEFT = 1;
+ public static final short TOP_RIGHT = 2;
+ public static final short BOTTOM_LEFT = 3;
+ public static final short BOTTOM_RIGHT = 4;
+ public static final short LEFT_TOP = 5;
+ public static final short RIGHT_TOP = 6;
+ public static final short LEFT_BOTTOM = 7;
+ public static final short RIGHT_BOTTOM = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_Y_CB_CR_POSITIONING}
+ */
+ public static interface YCbCrPositioning {
+ public static final short CENTERED = 1;
+ public static final short CO_SITED = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_COMPRESSION}
+ */
+ public static interface Compression {
+ public static final short UNCOMPRESSION = 1;
+ public static final short JPEG = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_RESOLUTION_UNIT}
+ */
+ public static interface ResolutionUnit {
+ public static final short INCHES = 2;
+ public static final short CENTIMETERS = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_PHOTOMETRIC_INTERPRETATION}
+ */
+ public static interface PhotometricInterpretation {
+ public static final short RGB = 2;
+ public static final short YCBCR = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_PLANAR_CONFIGURATION}
+ */
+ public static interface PlanarConfiguration {
+ public static final short CHUNKY = 1;
+ public static final short PLANAR = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_EXPOSURE_PROGRAM}
+ */
+ public static interface ExposureProgram {
+ public static final short NOT_DEFINED = 0;
+ public static final short MANUAL = 1;
+ public static final short NORMAL_PROGRAM = 2;
+ public static final short APERTURE_PRIORITY = 3;
+ public static final short SHUTTER_PRIORITY = 4;
+ public static final short CREATIVE_PROGRAM = 5;
+ public static final short ACTION_PROGRAM = 6;
+ public static final short PROTRAIT_MODE = 7;
+ public static final short LANDSCAPE_MODE = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_METERING_MODE}
+ */
+ public static interface MeteringMode {
+ public static final short UNKNOWN = 0;
+ public static final short AVERAGE = 1;
+ public static final short CENTER_WEIGHTED_AVERAGE = 2;
+ public static final short SPOT = 3;
+ public static final short MULTISPOT = 4;
+ public static final short PATTERN = 5;
+ public static final short PARTAIL = 6;
+ public static final short OTHER = 255;
+ }
+
+ /**
+ * Constants for {@link TAG_FLASH} As the definition in Jeita EXIF 2.2
+ * standard, we can treat this constant as bitwise flag.
+ * <p>
+ * e.g.
+ * <p>
+ * short flash = FIRED | RETURN_STROBE_RETURN_LIGHT_DETECTED |
+ * MODE_AUTO_MODE
+ */
+ public static interface Flash {
+ // LSB
+ public static final short DID_NOT_FIRED = 0;
+ public static final short FIRED = 1;
+ // 1st~2nd bits
+ public static final short RETURN_NO_STROBE_RETURN_DETECTION_FUNCTION = 0 << 1;
+ public static final short RETURN_STROBE_RETURN_LIGHT_NOT_DETECTED = 2 << 1;
+ public static final short RETURN_STROBE_RETURN_LIGHT_DETECTED = 3 << 1;
+ // 3rd~4th bits
+ public static final short MODE_UNKNOWN = 0 << 3;
+ public static final short MODE_COMPULSORY_FLASH_FIRING = 1 << 3;
+ public static final short MODE_COMPULSORY_FLASH_SUPPRESSION = 2 << 3;
+ public static final short MODE_AUTO_MODE = 3 << 3;
+ // 5th bit
+ public static final short FUNCTION_PRESENT = 0 << 5;
+ public static final short FUNCTION_NO_FUNCTION = 1 << 5;
+ // 6th bit
+ public static final short RED_EYE_REDUCTION_NO_OR_UNKNOWN = 0 << 6;
+ public static final short RED_EYE_REDUCTION_SUPPORT = 1 << 6;
+ }
+
+ /**
+ * Constants for {@link TAG_COLOR_SPACE}
+ */
+ public static interface ColorSpace {
+ public static final short SRGB = 1;
+ public static final short UNCALIBRATED = (short) 0xFFFF;
+ }
+
+ /**
+ * Constants for {@link TAG_EXPOSURE_MODE}
+ */
+ public static interface ExposureMode {
+ public static final short AUTO_EXPOSURE = 0;
+ public static final short MANUAL_EXPOSURE = 1;
+ public static final short AUTO_BRACKET = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_WHITE_BALANCE}
+ */
+ public static interface WhiteBalance {
+ public static final short AUTO = 0;
+ public static final short MANUAL = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_SCENE_CAPTURE_TYPE}
+ */
+ public static interface SceneCapture {
+ public static final short STANDARD = 0;
+ public static final short LANDSCAPE = 1;
+ public static final short PROTRAIT = 2;
+ public static final short NIGHT_SCENE = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_COMPONENTS_CONFIGURATION}
+ */
+ public static interface ComponentsConfiguration {
+ public static final short NOT_EXIST = 0;
+ public static final short Y = 1;
+ public static final short CB = 2;
+ public static final short CR = 3;
+ public static final short R = 4;
+ public static final short G = 5;
+ public static final short B = 6;
+ }
+
+ /**
+ * Constants for {@link TAG_LIGHT_SOURCE}
+ */
+ public static interface LightSource {
+ public static final short UNKNOWN = 0;
+ public static final short DAYLIGHT = 1;
+ public static final short FLUORESCENT = 2;
+ public static final short TUNGSTEN = 3;
+ public static final short FLASH = 4;
+ public static final short FINE_WEATHER = 9;
+ public static final short CLOUDY_WEATHER = 10;
+ public static final short SHADE = 11;
+ public static final short DAYLIGHT_FLUORESCENT = 12;
+ public static final short DAY_WHITE_FLUORESCENT = 13;
+ public static final short COOL_WHITE_FLUORESCENT = 14;
+ public static final short WHITE_FLUORESCENT = 15;
+ public static final short STANDARD_LIGHT_A = 17;
+ public static final short STANDARD_LIGHT_B = 18;
+ public static final short STANDARD_LIGHT_C = 19;
+ public static final short D55 = 20;
+ public static final short D65 = 21;
+ public static final short D75 = 22;
+ public static final short D50 = 23;
+ public static final short ISO_STUDIO_TUNGSTEN = 24;
+ public static final short OTHER = 255;
+ }
+
+ /**
+ * Constants for {@link TAG_SENSING_METHOD}
+ */
+ public static interface SensingMethod {
+ public static final short NOT_DEFINED = 1;
+ public static final short ONE_CHIP_COLOR = 2;
+ public static final short TWO_CHIP_COLOR = 3;
+ public static final short THREE_CHIP_COLOR = 4;
+ public static final short COLOR_SEQUENTIAL_AREA = 5;
+ public static final short TRILINEAR = 7;
+ public static final short COLOR_SEQUENTIAL_LINEAR = 8;
+ }
+
+ /**
+ * Constants for {@link TAG_FILE_SOURCE}
+ */
+ public static interface FileSource {
+ public static final short DSC = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_SCENE_TYPE}
+ */
+ public static interface SceneType {
+ public static final short DIRECT_PHOTOGRAPHED = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_GAIN_CONTROL}
+ */
+ public static interface GainControl {
+ public static final short NONE = 0;
+ public static final short LOW_UP = 1;
+ public static final short HIGH_UP = 2;
+ public static final short LOW_DOWN = 3;
+ public static final short HIGH_DOWN = 4;
+ }
+
+ /**
+ * Constants for {@link TAG_CONTRAST}
+ */
+ public static interface Contrast {
+ public static final short NORMAL = 0;
+ public static final short SOFT = 1;
+ public static final short HARD = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SATURATION}
+ */
+ public static interface Saturation {
+ public static final short NORMAL = 0;
+ public static final short LOW = 1;
+ public static final short HIGH = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SHARPNESS}
+ */
+ public static interface Sharpness {
+ public static final short NORMAL = 0;
+ public static final short SOFT = 1;
+ public static final short HARD = 2;
+ }
+
+ /**
+ * Constants for {@link TAG_SUBJECT_DISTANCE}
+ */
+ public static interface SubjectDistance {
+ public static final short UNKNOWN = 0;
+ public static final short MACRO = 1;
+ public static final short CLOSE_VIEW = 2;
+ public static final short DISTANT_VIEW = 3;
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_LATITUDE_REF},
+ * {@link TAG_GPS_DEST_LATITUDE_REF}
+ */
+ public static interface GpsLatitudeRef {
+ public static final String NORTH = "N";
+ public static final String SOUTH = "S";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_LONGITUDE_REF},
+ * {@link TAG_GPS_DEST_LONGITUDE_REF}
+ */
+ public static interface GpsLongitudeRef {
+ public static final String EAST = "E";
+ public static final String WEST = "W";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_ALTITUDE_REF}
+ */
+ public static interface GpsAltitudeRef {
+ public static final short SEA_LEVEL = 0;
+ public static final short SEA_LEVEL_NEGATIVE = 1;
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_STATUS}
+ */
+ public static interface GpsStatus {
+ public static final String IN_PROGRESS = "A";
+ public static final String INTEROPERABILITY = "V";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_MEASURE_MODE}
+ */
+ public static interface GpsMeasureMode {
+ public static final String MODE_2_DIMENSIONAL = "2";
+ public static final String MODE_3_DIMENSIONAL = "3";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_SPEED_REF},
+ * {@link TAG_GPS_DEST_DISTANCE_REF}
+ */
+ public static interface GpsSpeedRef {
+ public static final String KILOMETERS = "K";
+ public static final String MILES = "M";
+ public static final String KNOTS = "N";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_TRACK_REF},
+ * {@link TAG_GPS_IMG_DIRECTION_REF}, {@link TAG_GPS_DEST_BEARING_REF}
+ */
+ public static interface GpsTrackRef {
+ public static final String TRUE_DIRECTION = "T";
+ public static final String MAGNETIC_DIRECTION = "M";
+ }
+
+ /**
+ * Constants for {@link TAG_GPS_DIFFERENTIAL}
+ */
+ public static interface GpsDifferential {
+ public static final short WITHOUT_DIFFERENTIAL_CORRECTION = 0;
+ public static final short DIFFERENTIAL_CORRECTION_APPLIED = 1;
+ }
+
+ private static final String NULL_ARGUMENT_STRING = "Argument is null";
+ private ExifData mData = new ExifData(DEFAULT_BYTE_ORDER);
+ public static final ByteOrder DEFAULT_BYTE_ORDER = ByteOrder.BIG_ENDIAN;
+
+ public ExifInterface() {
+ mGPSDateStampFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+ }
+
+ /**
+ * Reads the exif tags from a byte array, clearing this ExifInterface
+ * object's existing exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @throws IOException
+ */
+ public void readExif(byte[] jpeg) throws IOException {
+ readExif(new ByteArrayInputStream(jpeg));
+ }
+
+ /**
+ * Reads the exif tags from an InputStream, clearing this ExifInterface
+ * object's existing exif tags.
+ *
+ * @param inStream an InputStream containing a jpeg compressed image.
+ * @throws IOException
+ */
+ public void readExif(InputStream inStream) throws IOException {
+ if (inStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ ExifData d = null;
+ try {
+ d = new ExifReader(this).read(inStream);
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : " + e);
+ }
+ mData = d;
+ }
+
+ /**
+ * Reads the exif tags from a file, clearing this ExifInterface object's
+ * existing exif tags.
+ *
+ * @param inFileName a string representing the filepath to jpeg file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void readExif(String inFileName) throws FileNotFoundException, IOException {
+ if (inFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ InputStream is = null;
+ try {
+ is = (InputStream) new BufferedInputStream(new FileInputStream(inFileName));
+ readExif(is);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ }
+ is.close();
+ }
+
+ /**
+ * Sets the exif tags, clearing this ExifInterface object's existing exif
+ * tags.
+ *
+ * @param tags a collection of exif tags to set.
+ */
+ public void setExif(Collection<ExifTag> tags) {
+ clearExif();
+ setTags(tags);
+ }
+
+ /**
+ * Clears this ExifInterface object's existing exif tags.
+ */
+ public void clearExif() {
+ mData = new ExifData(DEFAULT_BYTE_ORDER);
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg image,
+ * removing prior exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @param exifOutStream an OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(byte[] jpeg, OutputStream exifOutStream) throws IOException {
+ if (jpeg == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ s.write(jpeg, 0, jpeg.length);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg compressed
+ * bitmap, removing prior exif tags.
+ *
+ * @param bmap a bitmap to compress and write exif into.
+ * @param exifOutStream the OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(Bitmap bmap, OutputStream exifOutStream) throws IOException {
+ if (bmap == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ bmap.compress(Bitmap.CompressFormat.JPEG, 90, s);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg stream,
+ * removing prior exif tags.
+ *
+ * @param jpegStream an InputStream containing a jpeg compressed image.
+ * @param exifOutStream an OutputStream to which the jpeg image with added
+ * exif tags will be written.
+ * @throws IOException
+ */
+ public void writeExif(InputStream jpegStream, OutputStream exifOutStream) throws IOException {
+ if (jpegStream == null || exifOutStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = getExifWriterStream(exifOutStream);
+ doExifStreamIO(jpegStream, s);
+ s.flush();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg image,
+ * removing prior exif tags.
+ *
+ * @param jpeg a byte array containing a jpeg compressed image.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(byte[] jpeg, String exifOutFileName) throws FileNotFoundException,
+ IOException {
+ if (jpeg == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ s.write(jpeg, 0, jpeg.length);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg compressed
+ * bitmap, removing prior exif tags.
+ *
+ * @param bmap a bitmap to compress and write exif into.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(Bitmap bmap, String exifOutFileName) throws FileNotFoundException,
+ IOException {
+ if (bmap == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ bmap.compress(Bitmap.CompressFormat.JPEG, 90, s);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg stream,
+ * removing prior exif tags.
+ *
+ * @param jpegStream an InputStream containing a jpeg compressed image.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(InputStream jpegStream, String exifOutFileName)
+ throws FileNotFoundException, IOException {
+ if (jpegStream == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream s = null;
+ try {
+ s = getExifWriterStream(exifOutFileName);
+ doExifStreamIO(jpegStream, s);
+ s.flush();
+ } catch (IOException e) {
+ closeSilently(s);
+ throw e;
+ }
+ s.close();
+ }
+
+ /**
+ * Writes the tags from this ExifInterface object into a jpeg file, removing
+ * prior exif tags.
+ *
+ * @param jpegFileName a String containing the filepath for a jpeg file.
+ * @param exifOutFileName a String containing the filepath to which the jpeg
+ * image with added exif tags will be written.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public void writeExif(String jpegFileName, String exifOutFileName)
+ throws FileNotFoundException, IOException {
+ if (jpegFileName == null || exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ InputStream is = null;
+ try {
+ is = new FileInputStream(jpegFileName);
+ writeExif(is, exifOutFileName);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ }
+ is.close();
+ }
+
+ /**
+ * Wraps an OutputStream object with an ExifOutputStream. Exif tags in this
+ * ExifInterface object will be added to a jpeg image written to this
+ * stream, removing prior exif tags. Other methods of this ExifInterface
+ * object should not be called until the returned OutputStream has been
+ * closed.
+ *
+ * @param outStream an OutputStream to wrap.
+ * @return an OutputStream that wraps the outStream parameter, and adds exif
+ * metadata. A jpeg image should be written to this stream.
+ */
+ public OutputStream getExifWriterStream(OutputStream outStream) {
+ if (outStream == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ ExifOutputStream eos = new ExifOutputStream(outStream, this);
+ eos.setExifData(mData);
+ return eos;
+ }
+
+ /**
+ * Returns an OutputStream object that writes to a file. Exif tags in this
+ * ExifInterface object will be added to a jpeg image written to this
+ * stream, removing prior exif tags. Other methods of this ExifInterface
+ * object should not be called until the returned OutputStream has been
+ * closed.
+ *
+ * @param exifOutFileName an String containing a filepath for a jpeg file.
+ * @return an OutputStream that writes to the exifOutFileName file, and adds
+ * exif metadata. A jpeg image should be written to this stream.
+ * @throws FileNotFoundException
+ */
+ public OutputStream getExifWriterStream(String exifOutFileName) throws FileNotFoundException {
+ if (exifOutFileName == null) {
+ throw new IllegalArgumentException(NULL_ARGUMENT_STRING);
+ }
+ OutputStream out = null;
+ try {
+ out = (OutputStream) new FileOutputStream(exifOutFileName);
+ } catch (FileNotFoundException e) {
+ closeSilently(out);
+ throw e;
+ }
+ return getExifWriterStream(out);
+ }
+
+ /**
+ * Attempts to do an in-place rewrite the exif metadata in a file for the
+ * given tags. If tags do not exist or do not have the same size as the
+ * existing exif tags, this method will fail.
+ *
+ * @param filename a String containing a filepath for a jpeg file with exif
+ * tags to rewrite.
+ * @param tags tags that will be written into the jpeg file over existing
+ * tags if possible.
+ * @return true if success, false if could not overwrite. If false, no
+ * changes are made to the file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ */
+ public boolean rewriteExif(String filename, Collection<ExifTag> tags)
+ throws FileNotFoundException, IOException {
+ RandomAccessFile file = null;
+ InputStream is = null;
+ boolean ret;
+ try {
+ File temp = new File(filename);
+ is = new BufferedInputStream(new FileInputStream(temp));
+
+ // Parse beginning of APP1 in exif to find size of exif header.
+ ExifParser parser = null;
+ try {
+ parser = ExifParser.parse(is, this);
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : ", e);
+ }
+ long exifSize = parser.getOffsetToExifEndFromSOF();
+
+ // Free up resources
+ is.close();
+ is = null;
+
+ // Open file for memory mapping.
+ file = new RandomAccessFile(temp, "rw");
+ long fileLength = file.length();
+ if (fileLength < exifSize) {
+ throw new IOException("Filesize changed during operation");
+ }
+
+ // Map only exif header into memory.
+ ByteBuffer buf = file.getChannel().map(MapMode.READ_WRITE, 0, exifSize);
+
+ // Attempt to overwrite tag values without changing lengths (avoids
+ // file copy).
+ ret = rewriteExif(buf, tags);
+ } catch (IOException e) {
+ closeSilently(file);
+ throw e;
+ } finally {
+ closeSilently(is);
+ }
+ file.close();
+ return ret;
+ }
+
+ /**
+ * Attempts to do an in-place rewrite the exif metadata in a ByteBuffer for
+ * the given tags. If tags do not exist or do not have the same size as the
+ * existing exif tags, this method will fail.
+ *
+ * @param buf a ByteBuffer containing a jpeg file with existing exif tags to
+ * rewrite.
+ * @param tags tags that will be written into the jpeg ByteBuffer over
+ * existing tags if possible.
+ * @return true if success, false if could not overwrite. If false, no
+ * changes are made to the ByteBuffer.
+ * @throws IOException
+ */
+ public boolean rewriteExif(ByteBuffer buf, Collection<ExifTag> tags) throws IOException {
+ ExifModifier mod = null;
+ try {
+ mod = new ExifModifier(buf, this);
+ for (ExifTag t : tags) {
+ mod.modifyTag(t);
+ }
+ return mod.commit();
+ } catch (ExifInvalidFormatException e) {
+ throw new IOException("Invalid exif format : " + e);
+ }
+ }
+
+ /**
+ * Attempts to do an in-place rewrite of the exif metadata. If this fails,
+ * fall back to overwriting file. This preserves tags that are not being
+ * rewritten.
+ *
+ * @param filename a String containing a filepath for a jpeg file.
+ * @param tags tags that will be written into the jpeg file over existing
+ * tags if possible.
+ * @throws FileNotFoundException
+ * @throws IOException
+ * @see #rewriteExif
+ */
+ public void forceRewriteExif(String filename, Collection<ExifTag> tags)
+ throws FileNotFoundException,
+ IOException {
+ // Attempt in-place write
+ if (!rewriteExif(filename, tags)) {
+ // Fall back to doing a copy
+ ExifData tempData = mData;
+ mData = new ExifData(DEFAULT_BYTE_ORDER);
+ FileInputStream is = null;
+ ByteArrayOutputStream bytes = null;
+ try {
+ is = new FileInputStream(filename);
+ bytes = new ByteArrayOutputStream();
+ doExifStreamIO(is, bytes);
+ byte[] imageBytes = bytes.toByteArray();
+ readExif(imageBytes);
+ setTags(tags);
+ writeExif(imageBytes, filename);
+ } catch (IOException e) {
+ closeSilently(is);
+ throw e;
+ } finally {
+ is.close();
+ // Prevent clobbering of mData
+ mData = tempData;
+ }
+ }
+ }
+
+ /**
+ * Attempts to do an in-place rewrite of the exif metadata using the tags in
+ * this ExifInterface object. If this fails, fall back to overwriting file.
+ * This preserves tags that are not being rewritten.
+ *
+ * @param filename a String containing a filepath for a jpeg file.
+ * @throws FileNotFoundException
+ * @throws IOException
+ * @see #rewriteExif
+ */
+ public void forceRewriteExif(String filename) throws FileNotFoundException, IOException {
+ forceRewriteExif(filename, getAllTags());
+ }
+
+ /**
+ * Get the exif tags in this ExifInterface object or null if none exist.
+ *
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getAllTags() {
+ return mData.getAllTags();
+ }
+
+ /**
+ * Returns a list of ExifTags that share a TID (which can be obtained by
+ * calling {@link #getTrueTagKey} on a defined tag constant) or null if none
+ * exist.
+ *
+ * @param tagId a TID as defined in the exif standard (or with
+ * {@link #defineTag}).
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getTagsForTagId(short tagId) {
+ return mData.getAllTagsForTagId(tagId);
+ }
+
+ /**
+ * Returns a list of ExifTags that share an IFD (which can be obtained by
+ * calling {@link #getTrueIFD} on a defined tag constant) or null if none
+ * exist.
+ *
+ * @param ifdId an IFD as defined in the exif standard (or with
+ * {@link #defineTag}).
+ * @return a List of {@link ExifTag}s.
+ */
+ public List<ExifTag> getTagsForIfdId(int ifdId) {
+ return mData.getAllTagsForIfd(ifdId);
+ }
+
+ /**
+ * Gets an ExifTag for an IFD other than the tag's default.
+ *
+ * @see #getTag
+ */
+ public ExifTag getTag(int tagId, int ifdId) {
+ if (!ExifTag.isValidIfd(ifdId)) {
+ return null;
+ }
+ return mData.getTag(getTrueTagKey(tagId), ifdId);
+ }
+
+ /**
+ * Returns the ExifTag in that tag's default IFD for a defined tag constant
+ * or null if none exists.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return an {@link ExifTag} or null if none exists.
+ */
+ public ExifTag getTag(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTag(tagId, ifdId);
+ }
+
+ /**
+ * Gets a tag value for an IFD other than the tag's default.
+ *
+ * @see #getTagValue
+ */
+ public Object getTagValue(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ return (t == null) ? null : t.getValue();
+ }
+
+ /**
+ * Returns the value of the ExifTag in that tag's default IFD for a defined
+ * tag constant or null if none exists or the value could not be cast into
+ * the return type.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the value of the ExifTag or null if none exists.
+ */
+ public Object getTagValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagValue(tagId, ifdId);
+ }
+
+ /*
+ * Getter methods that are similar to getTagValue. Null is returned if the
+ * tag value cannot be cast into the return type.
+ */
+
+ /**
+ * @see #getTagValue
+ */
+ public String getTagStringValue(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsString();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public String getTagStringValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagStringValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Long getTagLongValue(int tagId, int ifdId) {
+ long[] l = getTagLongValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Long(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Long getTagLongValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagLongValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Integer getTagIntValue(int tagId, int ifdId) {
+ int[] l = getTagIntValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Integer(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Integer getTagIntValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagIntValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Byte getTagByteValue(int tagId, int ifdId) {
+ byte[] l = getTagByteValues(tagId, ifdId);
+ if (l == null || l.length <= 0) {
+ return null;
+ }
+ return new Byte(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Byte getTagByteValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagByteValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational getTagRationalValue(int tagId, int ifdId) {
+ Rational[] l = getTagRationalValues(tagId, ifdId);
+ if (l == null || l.length == 0) {
+ return null;
+ }
+ return new Rational(l[0]);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational getTagRationalValue(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagRationalValue(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public long[] getTagLongValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsLongs();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public long[] getTagLongValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagLongValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public int[] getTagIntValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsInts();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public int[] getTagIntValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagIntValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public byte[] getTagByteValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsBytes();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public byte[] getTagByteValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagByteValues(tagId, ifdId);
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational[] getTagRationalValues(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return null;
+ }
+ return t.getValueAsRationals();
+ }
+
+ /**
+ * @see #getTagValue
+ */
+ public Rational[] getTagRationalValues(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return getTagRationalValues(tagId, ifdId);
+ }
+
+ /**
+ * Checks whether a tag has a defined number of elements.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return true if the tag has a defined number of elements.
+ */
+ public boolean isTagCountDefined(int tagId) {
+ int info = getTagInfo().get(tagId);
+ // No value in info can be zero, as all tags have a non-zero type
+ if (info == 0) {
+ return false;
+ }
+ return getComponentCountFromInfo(info) != ExifTag.SIZE_UNDEFINED;
+ }
+
+ /**
+ * Gets the defined number of elements for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the number of elements or {@link ExifTag#SIZE_UNDEFINED} if the
+ * tag or the number of elements is not defined.
+ */
+ public int getDefinedTagCount(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return ExifTag.SIZE_UNDEFINED;
+ }
+ return getComponentCountFromInfo(info);
+ }
+
+ /**
+ * Gets the number of elements for an ExifTag in a given IFD.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD containing the ExifTag to check.
+ * @return the number of elements in the ExifTag, if the tag's size is
+ * undefined this will return the actual number of elements that is
+ * in the ExifTag's value.
+ */
+ public int getActualTagCount(int tagId, int ifdId) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return 0;
+ }
+ return t.getComponentCount();
+ }
+
+ /**
+ * Gets the default IFD for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the default IFD for a tag definition or {@link #IFD_NULL} if no
+ * definition exists.
+ */
+ public int getDefinedTagDefaultIfd(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == DEFINITION_NULL) {
+ return IFD_NULL;
+ }
+ return getTrueIfd(tagId);
+ }
+
+ /**
+ * Gets the defined type for a tag.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @return the type.
+ * @see ExifTag#getDataType()
+ */
+ public short getDefinedTagType(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return -1;
+ }
+ return getTypeFromInfo(info);
+ }
+
+ /**
+ * Returns true if tag TID is one of the following: {@link TAG_EXIF_IFD},
+ * {@link TAG_GPS_IFD}, {@link TAG_JPEG_INTERCHANGE_FORMAT},
+ * {@link TAG_STRIP_OFFSETS}, {@link TAG_INTEROPERABILITY_IFD}
+ * <p>
+ * Note: defining tags with these TID's is disallowed.
+ *
+ * @param tag a tag's TID (can be obtained from a defined tag constant with
+ * {@link #getTrueTagKey}).
+ * @return true if the TID is that of an offset tag.
+ */
+ protected static boolean isOffsetTag(short tag) {
+ return sOffsetTags.contains(tag);
+ }
+
+ /**
+ * Creates a tag for a defined tag constant in a given IFD if that IFD is
+ * allowed for the tag. This method will fail anytime the appropriate
+ * {@link ExifTag#setValue} for this tag's datatype would fail.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD that the tag should be in.
+ * @param val the value of the tag to set.
+ * @return an ExifTag object or null if one could not be constructed.
+ * @see #buildTag
+ */
+ public ExifTag buildTag(int tagId, int ifdId, Object val) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0 || val == null) {
+ return null;
+ }
+ short type = getTypeFromInfo(info);
+ int definedCount = getComponentCountFromInfo(info);
+ boolean hasDefinedCount = (definedCount != ExifTag.SIZE_UNDEFINED);
+ if (!ExifInterface.isIfdAllowed(info, ifdId)) {
+ return null;
+ }
+ ExifTag t = new ExifTag(getTrueTagKey(tagId), type, definedCount, ifdId, hasDefinedCount);
+ if (!t.setValue(val)) {
+ return null;
+ }
+ return t;
+ }
+
+ /**
+ * Creates a tag for a defined tag constant in the tag's default IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param val the tag's value.
+ * @return an ExifTag object.
+ */
+ public ExifTag buildTag(int tagId, Object val) {
+ int ifdId = getTrueIfd(tagId);
+ return buildTag(tagId, ifdId, val);
+ }
+
+ protected ExifTag buildUninitializedTag(int tagId) {
+ int info = getTagInfo().get(tagId);
+ if (info == 0) {
+ return null;
+ }
+ short type = getTypeFromInfo(info);
+ int definedCount = getComponentCountFromInfo(info);
+ boolean hasDefinedCount = (definedCount != ExifTag.SIZE_UNDEFINED);
+ int ifdId = getTrueIfd(tagId);
+ ExifTag t = new ExifTag(getTrueTagKey(tagId), type, definedCount, ifdId, hasDefinedCount);
+ return t;
+ }
+
+ /**
+ * Sets the value of an ExifTag if it exists in the given IFD. The value
+ * must be the correct type and length for that ExifTag.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD that the ExifTag is in.
+ * @param val the value to set.
+ * @return true if success, false if the ExifTag doesn't exist or the value
+ * is the wrong type/length.
+ * @see #setTagValue
+ */
+ public boolean setTagValue(int tagId, int ifdId, Object val) {
+ ExifTag t = getTag(tagId, ifdId);
+ if (t == null) {
+ return false;
+ }
+ return t.setValue(val);
+ }
+
+ /**
+ * Sets the value of an ExifTag if it exists it's default IFD. The value
+ * must be the correct type and length for that ExifTag.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param val the value to set.
+ * @return true if success, false if the ExifTag doesn't exist or the value
+ * is the wrong type/length.
+ */
+ public boolean setTagValue(int tagId, Object val) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ return setTagValue(tagId, ifdId, val);
+ }
+
+ /**
+ * Puts an ExifTag into this ExifInterface object's tags, removing a
+ * previous ExifTag with the same TID and IFD. The IFD it is put into will
+ * be the one the tag was created with in {@link #buildTag}.
+ *
+ * @param tag an ExifTag to put into this ExifInterface's tags.
+ * @return the previous ExifTag with the same TID and IFD or null if none
+ * exists.
+ */
+ public ExifTag setTag(ExifTag tag) {
+ return mData.addTag(tag);
+ }
+
+ /**
+ * Puts a collection of ExifTags into this ExifInterface objects's tags. Any
+ * previous ExifTags with the same TID and IFDs will be removed.
+ *
+ * @param tags a Collection of ExifTags.
+ * @see #setTag
+ */
+ public void setTags(Collection<ExifTag> tags) {
+ for (ExifTag t : tags) {
+ setTag(t);
+ }
+ }
+
+ /**
+ * Removes the ExifTag for a tag constant from the given IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ * @param ifdId the IFD of the ExifTag to remove.
+ */
+ public void deleteTag(int tagId, int ifdId) {
+ mData.removeTag(getTrueTagKey(tagId), ifdId);
+ }
+
+ /**
+ * Removes the ExifTag for a tag constant from that tag's default IFD.
+ *
+ * @param tagId a tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ */
+ public void deleteTag(int tagId) {
+ int ifdId = getDefinedTagDefaultIfd(tagId);
+ deleteTag(tagId, ifdId);
+ }
+
+ /**
+ * Creates a new tag definition in this ExifInterface object for a given TID
+ * and default IFD. Creating a definition with the same TID and default IFD
+ * as a previous definition will override it.
+ *
+ * @param tagId the TID for the tag.
+ * @param defaultIfd the default IFD for the tag.
+ * @param tagType the type of the tag (see {@link ExifTag#getDataType()}).
+ * @param defaultComponentCount the number of elements of this tag's type in
+ * the tags value.
+ * @param allowedIfds the IFD's this tag is allowed to be put in.
+ * @return the defined tag constant (e.g. {@link #TAG_IMAGE_WIDTH}) or
+ * {@link #TAG_NULL} if the definition could not be made.
+ */
+ public int setTagDefinition(short tagId, int defaultIfd, short tagType,
+ short defaultComponentCount, int[] allowedIfds) {
+ if (sBannedDefines.contains(tagId)) {
+ return TAG_NULL;
+ }
+ if (ExifTag.isValidType(tagType) && ExifTag.isValidIfd(defaultIfd)) {
+ int tagDef = defineTag(defaultIfd, tagId);
+ if (tagDef == TAG_NULL) {
+ return TAG_NULL;
+ }
+ int[] otherDefs = getTagDefinitionsForTagId(tagId);
+ SparseIntArray infos = getTagInfo();
+ // Make sure defaultIfd is in allowedIfds
+ boolean defaultCheck = false;
+ for (int i : allowedIfds) {
+ if (defaultIfd == i) {
+ defaultCheck = true;
+ }
+ if (!ExifTag.isValidIfd(i)) {
+ return TAG_NULL;
+ }
+ }
+ if (!defaultCheck) {
+ return TAG_NULL;
+ }
+
+ int ifdFlags = getFlagsFromAllowedIfds(allowedIfds);
+ // Make sure no identical tags can exist in allowedIfds
+ if (otherDefs != null) {
+ for (int def : otherDefs) {
+ int tagInfo = infos.get(def);
+ int allowedFlags = getAllowedIfdFlagsFromInfo(tagInfo);
+ if ((ifdFlags & allowedFlags) != 0) {
+ return TAG_NULL;
+ }
+ }
+ }
+ getTagInfo().put(tagDef, ifdFlags << 24 | (tagType << 16) | defaultComponentCount);
+ return tagDef;
+ }
+ return TAG_NULL;
+ }
+
+ protected int getTagDefinition(short tagId, int defaultIfd) {
+ return getTagInfo().get(defineTag(defaultIfd, tagId));
+ }
+
+ protected int[] getTagDefinitionsForTagId(short tagId) {
+ int[] ifds = IfdData.getIfds();
+ int[] defs = new int[ifds.length];
+ int counter = 0;
+ SparseIntArray infos = getTagInfo();
+ for (int i : ifds) {
+ int def = defineTag(i, tagId);
+ if (infos.get(def) != DEFINITION_NULL) {
+ defs[counter++] = def;
+ }
+ }
+ if (counter == 0) {
+ return null;
+ }
+
+ return Arrays.copyOfRange(defs, 0, counter);
+ }
+
+ protected int getTagDefinitionForTag(ExifTag tag) {
+ short type = tag.getDataType();
+ int count = tag.getComponentCount();
+ int ifd = tag.getIfd();
+ return getTagDefinitionForTag(tag.getTagId(), type, count, ifd);
+ }
+
+ protected int getTagDefinitionForTag(short tagId, short type, int count, int ifd) {
+ int[] defs = getTagDefinitionsForTagId(tagId);
+ if (defs == null) {
+ return TAG_NULL;
+ }
+ SparseIntArray infos = getTagInfo();
+ int ret = TAG_NULL;
+ for (int i : defs) {
+ int info = infos.get(i);
+ short def_type = getTypeFromInfo(info);
+ int def_count = getComponentCountFromInfo(info);
+ int[] def_ifds = getAllowedIfdsFromInfo(info);
+ boolean valid_ifd = false;
+ for (int j : def_ifds) {
+ if (j == ifd) {
+ valid_ifd = true;
+ break;
+ }
+ }
+ if (valid_ifd && type == def_type
+ && (count == def_count || def_count == ExifTag.SIZE_UNDEFINED)) {
+ ret = i;
+ break;
+ }
+ }
+ return ret;
+ }
+
+ /**
+ * Removes a tag definition for given defined tag constant.
+ *
+ * @param tagId a defined tag constant, e.g. {@link #TAG_IMAGE_WIDTH}.
+ */
+ public void removeTagDefinition(int tagId) {
+ getTagInfo().delete(tagId);
+ }
+
+ /**
+ * Resets tag definitions to the default ones.
+ */
+ public void resetTagDefinitions() {
+ mTagInfo = null;
+ }
+
+ /**
+ * Returns the thumbnail from IFD1 as a bitmap, or null if none exists.
+ *
+ * @return the thumbnail as a bitmap.
+ */
+ public Bitmap getThumbnailBitmap() {
+ if (mData.hasCompressedThumbnail()) {
+ byte[] thumb = mData.getCompressedThumbnail();
+ return BitmapFactory.decodeByteArray(thumb, 0, thumb.length);
+ } else if (mData.hasUncompressedStrip()) {
+ // TODO: implement uncompressed
+ }
+ return null;
+ }
+
+ /**
+ * Returns the thumbnail from IFD1 as a byte array, or null if none exists.
+ * The bytes may either be an uncompressed strip as specified in the exif
+ * standard or a jpeg compressed image.
+ *
+ * @return the thumbnail as a byte array.
+ */
+ public byte[] getThumbnailBytes() {
+ if (mData.hasCompressedThumbnail()) {
+ return mData.getCompressedThumbnail();
+ } else if (mData.hasUncompressedStrip()) {
+ // TODO: implement this
+ }
+ return null;
+ }
+
+ /**
+ * Returns the thumbnail if it is jpeg compressed, or null if none exists.
+ *
+ * @return the thumbnail as a byte array.
+ */
+ public byte[] getThumbnail() {
+ return mData.getCompressedThumbnail();
+ }
+
+ /**
+ * Check if thumbnail is compressed.
+ *
+ * @return true if the thumbnail is compressed.
+ */
+ public boolean isThumbnailCompressed() {
+ return mData.hasCompressedThumbnail();
+ }
+
+ /**
+ * Check if thumbnail exists.
+ *
+ * @return true if a compressed thumbnail exists.
+ */
+ public boolean hasThumbnail() {
+ // TODO: add back in uncompressed strip
+ return mData.hasCompressedThumbnail();
+ }
+
+ // TODO: uncompressed thumbnail setters
+
+ /**
+ * Sets the thumbnail to be a jpeg compressed image. Clears any prior
+ * thumbnail.
+ *
+ * @param thumb a byte array containing a jpeg compressed image.
+ * @return true if the thumbnail was set.
+ */
+ public boolean setCompressedThumbnail(byte[] thumb) {
+ mData.clearThumbnailAndStrips();
+ mData.setCompressedThumbnail(thumb);
+ return true;
+ }
+
+ /**
+ * Sets the thumbnail to be a jpeg compressed bitmap. Clears any prior
+ * thumbnail.
+ *
+ * @param thumb a bitmap to compress to a jpeg thumbnail.
+ * @return true if the thumbnail was set.
+ */
+ public boolean setCompressedThumbnail(Bitmap thumb) {
+ ByteArrayOutputStream thumbnail = new ByteArrayOutputStream();
+ if (!thumb.compress(Bitmap.CompressFormat.JPEG, 90, thumbnail)) {
+ return false;
+ }
+ return setCompressedThumbnail(thumbnail.toByteArray());
+ }
+
+ /**
+ * Clears the compressed thumbnail if it exists.
+ */
+ public void removeCompressedThumbnail() {
+ mData.setCompressedThumbnail(null);
+ }
+
+ // Convenience methods:
+
+ /**
+ * Decodes the user comment tag into string as specified in the EXIF
+ * standard. Returns null if decoding failed.
+ */
+ public String getUserComment() {
+ return mData.getUserComment();
+ }
+
+ /**
+ * Returns the Orientation ExifTag value for a given number of degrees.
+ *
+ * @param degrees the amount an image is rotated in degrees.
+ */
+ public static short getOrientationValueForRotation(int degrees) {
+ degrees %= 360;
+ if (degrees < 0) {
+ degrees += 360;
+ }
+ if (degrees < 90) {
+ return Orientation.TOP_LEFT; // 0 degrees
+ } else if (degrees < 180) {
+ return Orientation.RIGHT_TOP; // 90 degrees cw
+ } else if (degrees < 270) {
+ return Orientation.BOTTOM_LEFT; // 180 degrees
+ } else {
+ return Orientation.RIGHT_BOTTOM; // 270 degrees cw
+ }
+ }
+
+ /**
+ * Returns the rotation degrees corresponding to an ExifTag Orientation
+ * value.
+ *
+ * @param orientation the ExifTag Orientation value.
+ */
+ public static int getRotationForOrientationValue(short orientation) {
+ switch (orientation) {
+ case Orientation.TOP_LEFT:
+ return 0;
+ case Orientation.RIGHT_TOP:
+ return 90;
+ case Orientation.BOTTOM_LEFT:
+ return 180;
+ case Orientation.RIGHT_BOTTOM:
+ return 270;
+ default:
+ return 0;
+ }
+ }
+
+ /**
+ * Gets the double representation of the GPS latitude or longitude
+ * coordinate.
+ *
+ * @param coordinate an array of 3 Rationals representing the degrees,
+ * minutes, and seconds of the GPS location as defined in the
+ * exif specification.
+ * @param reference a GPS reference reperesented by a String containing "N",
+ * "S", "E", or "W".
+ * @return the GPS coordinate represented as degrees + minutes/60 +
+ * seconds/3600
+ */
+ public static double convertLatOrLongToDouble(Rational[] coordinate, String reference) {
+ try {
+ double degrees = coordinate[0].toDouble();
+ double minutes = coordinate[1].toDouble();
+ double seconds = coordinate[2].toDouble();
+ double result = degrees + minutes / 60.0 + seconds / 3600.0;
+ if ((reference.equals("S") || reference.equals("W"))) {
+ return -result;
+ }
+ return result;
+ } catch (ArrayIndexOutOfBoundsException e) {
+ throw new IllegalArgumentException();
+ }
+ }
+
+ /**
+ * Gets the GPS latitude and longitude as a pair of doubles from this
+ * ExifInterface object's tags, or null if the necessary tags do not exist.
+ *
+ * @return an array of 2 doubles containing the latitude, and longitude
+ * respectively.
+ * @see #convertLatOrLongToDouble
+ */
+ public double[] getLatLongAsDoubles() {
+ Rational[] latitude = getTagRationalValues(TAG_GPS_LATITUDE);
+ String latitudeRef = getTagStringValue(TAG_GPS_LATITUDE_REF);
+ Rational[] longitude = getTagRationalValues(TAG_GPS_LONGITUDE);
+ String longitudeRef = getTagStringValue(TAG_GPS_LONGITUDE_REF);
+ if (latitude == null || longitude == null || latitudeRef == null || longitudeRef == null
+ || latitude.length < 3 || longitude.length < 3) {
+ return null;
+ }
+ double[] latLon = new double[2];
+ latLon[0] = convertLatOrLongToDouble(latitude, latitudeRef);
+ latLon[1] = convertLatOrLongToDouble(longitude, longitudeRef);
+ return latLon;
+ }
+
+ private static final String GPS_DATE_FORMAT_STR = "yyyy:MM:dd";
+ private static final String DATETIME_FORMAT_STR = "yyyy:MM:dd kk:mm:ss";
+ private final DateFormat mDateTimeStampFormat = new SimpleDateFormat(DATETIME_FORMAT_STR);
+ private final DateFormat mGPSDateStampFormat = new SimpleDateFormat(GPS_DATE_FORMAT_STR);
+ private final Calendar mGPSTimeStampCalendar = Calendar
+ .getInstance(TimeZone.getTimeZone("UTC"));
+
+ /**
+ * Creates, formats, and sets the DateTimeStamp tag for one of:
+ * {@link #TAG_DATE_TIME}, {@link #TAG_DATE_TIME_DIGITIZED},
+ * {@link #TAG_DATE_TIME_ORIGINAL}.
+ *
+ * @param tagId one of the DateTimeStamp tags.
+ * @param timestamp a timestamp to format.
+ * @param timezone a TimeZone object.
+ * @return true if success, false if the tag could not be set.
+ */
+ public boolean addDateTimeStampTag(int tagId, long timestamp, TimeZone timezone) {
+ if (tagId == TAG_DATE_TIME || tagId == TAG_DATE_TIME_DIGITIZED
+ || tagId == TAG_DATE_TIME_ORIGINAL) {
+ mDateTimeStampFormat.setTimeZone(timezone);
+ ExifTag t = buildTag(tagId, mDateTimeStampFormat.format(timestamp));
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ } else {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Creates and sets all to the GPS tags for a give latitude and longitude.
+ *
+ * @param latitude a GPS latitude coordinate.
+ * @param longitude a GPS longitude coordinate.
+ * @return true if success, false if they could not be created or set.
+ */
+ public boolean addGpsTags(double latitude, double longitude) {
+ ExifTag latTag = buildTag(TAG_GPS_LATITUDE, toExifLatLong(latitude));
+ ExifTag longTag = buildTag(TAG_GPS_LONGITUDE, toExifLatLong(longitude));
+ ExifTag latRefTag = buildTag(TAG_GPS_LATITUDE_REF,
+ latitude >= 0 ? ExifInterface.GpsLatitudeRef.NORTH
+ : ExifInterface.GpsLatitudeRef.SOUTH);
+ ExifTag longRefTag = buildTag(TAG_GPS_LONGITUDE_REF,
+ longitude >= 0 ? ExifInterface.GpsLongitudeRef.EAST
+ : ExifInterface.GpsLongitudeRef.WEST);
+ if (latTag == null || longTag == null || latRefTag == null || longRefTag == null) {
+ return false;
+ }
+ setTag(latTag);
+ setTag(longTag);
+ setTag(latRefTag);
+ setTag(longRefTag);
+ return true;
+ }
+
+ /**
+ * Creates and sets the GPS timestamp tag.
+ *
+ * @param timestamp a GPS timestamp.
+ * @return true if success, false if could not be created or set.
+ */
+ public boolean addGpsDateTimeStampTag(long timestamp) {
+ ExifTag t = buildTag(TAG_GPS_DATE_STAMP, mGPSDateStampFormat.format(timestamp));
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ mGPSTimeStampCalendar.setTimeInMillis(timestamp);
+ t = buildTag(TAG_GPS_TIME_STAMP, new Rational[] {
+ new Rational(mGPSTimeStampCalendar.get(Calendar.HOUR_OF_DAY), 1),
+ new Rational(mGPSTimeStampCalendar.get(Calendar.MINUTE), 1),
+ new Rational(mGPSTimeStampCalendar.get(Calendar.SECOND), 1)
+ });
+ if (t == null) {
+ return false;
+ }
+ setTag(t);
+ return true;
+ }
+
+ private static Rational[] toExifLatLong(double value) {
+ // convert to the format dd/1 mm/1 ssss/100
+ value = Math.abs(value);
+ int degrees = (int) value;
+ value = (value - degrees) * 60;
+ int minutes = (int) value;
+ value = (value - minutes) * 6000;
+ int seconds = (int) value;
+ return new Rational[] {
+ new Rational(degrees, 1), new Rational(minutes, 1), new Rational(seconds, 100)
+ };
+ }
+
+ private void doExifStreamIO(InputStream is, OutputStream os) throws IOException {
+ byte[] buf = new byte[1024];
+ int ret = is.read(buf, 0, 1024);
+ while (ret != -1) {
+ os.write(buf, 0, ret);
+ ret = is.read(buf, 0, 1024);
+ }
+ }
+
+ protected static void closeSilently(Closeable c) {
+ if (c != null) {
+ try {
+ c.close();
+ } catch (Throwable e) {
+ // ignored
+ }
+ }
+ }
+
+ private SparseIntArray mTagInfo = null;
+
+ protected SparseIntArray getTagInfo() {
+ if (mTagInfo == null) {
+ mTagInfo = new SparseIntArray();
+ initTagInfo();
+ }
+ return mTagInfo;
+ }
+
+ private void initTagInfo() {
+ /**
+ * We put tag information in a 4-bytes integer. The first byte a bitmask
+ * representing the allowed IFDs of the tag, the second byte is the data
+ * type, and the last two byte are a short value indicating the default
+ * component count of this tag.
+ */
+ // IFD0 tags
+ int[] ifdAllowedIfds = {
+ IfdId.TYPE_IFD_0, IfdId.TYPE_IFD_1
+ };
+ int ifdFlags = getFlagsFromAllowedIfds(ifdAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_MAKE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_WIDTH,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_LENGTH,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_BITS_PER_SAMPLE,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_COMPRESSION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PHOTOMETRIC_INTERPRETATION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_ORIENTATION, ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16
+ | 1);
+ mTagInfo.put(ExifInterface.TAG_SAMPLES_PER_PIXEL,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PLANAR_CONFIGURATION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_SUB_SAMPLING,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_POSITIONING,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_X_RESOLUTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_Y_RESOLUTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_RESOLUTION_UNIT,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_STRIP_OFFSETS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ROWS_PER_STRIP,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_STRIP_BYTE_COUNTS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_TRANSFER_FUNCTION,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 3 * 256);
+ mTagInfo.put(ExifInterface.TAG_WHITE_POINT,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_PRIMARY_CHROMATICITIES,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 6);
+ mTagInfo.put(ExifInterface.TAG_Y_CB_CR_COEFFICIENTS,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_REFERENCE_BLACK_WHITE,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 6);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_DESCRIPTION,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_MAKE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_MODEL,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SOFTWARE,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ARTIST,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_COPYRIGHT,
+ ifdFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_EXIF_IFD,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_IFD,
+ ifdFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // IFD1 tags
+ int[] ifd1AllowedIfds = {
+ IfdId.TYPE_IFD_1
+ };
+ int ifdFlags1 = getFlagsFromAllowedIfds(ifd1AllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT,
+ ifdFlags1 | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH,
+ ifdFlags1 | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // Exif tags
+ int[] exifAllowedIfds = {
+ IfdId.TYPE_IFD_EXIF
+ };
+ int exifFlags = getFlagsFromAllowedIfds(exifAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_EXIF_VERSION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_FLASHPIX_VERSION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_COLOR_SPACE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_COMPONENTS_CONFIGURATION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_COMPRESSED_BITS_PER_PIXEL,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PIXEL_X_DIMENSION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_PIXEL_Y_DIMENSION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_MAKER_NOTE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_USER_COMMENT,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_RELATED_SOUND_FILE,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 13);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME_ORIGINAL,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_DATE_TIME_DIGITIZED,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 20);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME_ORIGINAL,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUB_SEC_TIME_DIGITIZED,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_IMAGE_UNIQUE_ID,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | 33);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_TIME,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_F_NUMBER,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_PROGRAM,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SPECTRAL_SENSITIVITY,
+ exifFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_ISO_SPEED_RATINGS,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_OECF,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SHUTTER_SPEED_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_APERTURE_VALUE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_BRIGHTNESS_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_BIAS_VALUE,
+ exifFlags | ExifTag.TYPE_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_MAX_APERTURE_VALUE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_DISTANCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_METERING_MODE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_LIGHT_SOURCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FLASH,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_LENGTH,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_AREA,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_FLASH_ENERGY,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SPATIAL_FREQUENCY_RESPONSE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_X_RESOLUTION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_Y_RESOLUTION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_PLANE_RESOLUTION_UNIT,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_LOCATION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_INDEX,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SENSING_METHOD,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FILE_SOURCE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SCENE_TYPE,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_CFA_PATTERN,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_CUSTOM_RENDERED,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_EXPOSURE_MODE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_WHITE_BALANCE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_DIGITAL_ZOOM_RATIO,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_FOCAL_LENGTH_IN_35_MM_FILE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SCENE_CAPTURE_TYPE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GAIN_CONTROL,
+ exifFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_CONTRAST,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SATURATION,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_SHARPNESS,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_DEVICE_SETTING_DESCRIPTION,
+ exifFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_SUBJECT_DISTANCE_RANGE,
+ exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_INTEROPERABILITY_IFD, exifFlags
+ | ExifTag.TYPE_UNSIGNED_LONG << 16 | 1);
+ // GPS tag
+ int[] gpsAllowedIfds = {
+ IfdId.TYPE_IFD_GPS
+ };
+ int gpsFlags = getFlagsFromAllowedIfds(gpsAllowedIfds) << 24;
+ mTagInfo.put(ExifInterface.TAG_GPS_VERSION_ID,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_BYTE << 16 | 4);
+ mTagInfo.put(ExifInterface.TAG_GPS_LATITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_LONGITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_LATITUDE,
+ gpsFlags | ExifTag.TYPE_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_LONGITUDE,
+ gpsFlags | ExifTag.TYPE_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_ALTITUDE_REF,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_BYTE << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_ALTITUDE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_TIME_STAMP,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 3);
+ mTagInfo.put(ExifInterface.TAG_GPS_SATTELLITES,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_STATUS,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_MEASURE_MODE,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DOP,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_SPEED_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_SPEED,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_TRACK_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_TRACK,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_IMG_DIRECTION_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_IMG_DIRECTION,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_MAP_DATUM,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_LATITUDE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_LATITUDE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_BEARING_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_BEARING,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_DISTANCE_REF,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 2);
+ mTagInfo.put(ExifInterface.TAG_GPS_DEST_DISTANCE,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_RATIONAL << 16 | 1);
+ mTagInfo.put(ExifInterface.TAG_GPS_PROCESSING_METHOD,
+ gpsFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_AREA_INFORMATION,
+ gpsFlags | ExifTag.TYPE_UNDEFINED << 16 | ExifTag.SIZE_UNDEFINED);
+ mTagInfo.put(ExifInterface.TAG_GPS_DATE_STAMP,
+ gpsFlags | ExifTag.TYPE_ASCII << 16 | 11);
+ mTagInfo.put(ExifInterface.TAG_GPS_DIFFERENTIAL,
+ gpsFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 11);
+ // Interoperability tag
+ int[] interopAllowedIfds = {
+ IfdId.TYPE_IFD_INTEROPERABILITY
+ };
+ int interopFlags = getFlagsFromAllowedIfds(interopAllowedIfds) << 24;
+ mTagInfo.put(TAG_INTEROPERABILITY_INDEX, interopFlags | ExifTag.TYPE_ASCII << 16
+ | ExifTag.SIZE_UNDEFINED);
+ }
+
+ protected static int getAllowedIfdFlagsFromInfo(int info) {
+ return info >>> 24;
+ }
+
+ protected static int[] getAllowedIfdsFromInfo(int info) {
+ int ifdFlags = getAllowedIfdFlagsFromInfo(info);
+ int[] ifds = IfdData.getIfds();
+ ArrayList<Integer> l = new ArrayList<Integer>();
+ for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+ int flag = (ifdFlags >> i) & 1;
+ if (flag == 1) {
+ l.add(ifds[i]);
+ }
+ }
+ if (l.size() <= 0) {
+ return null;
+ }
+ int[] ret = new int[l.size()];
+ int j = 0;
+ for (int i : l) {
+ ret[j++] = i;
+ }
+ return ret;
+ }
+
+ protected static boolean isIfdAllowed(int info, int ifd) {
+ int[] ifds = IfdData.getIfds();
+ int ifdFlags = getAllowedIfdFlagsFromInfo(info);
+ for (int i = 0; i < ifds.length; i++) {
+ if (ifd == ifds[i] && ((ifdFlags >> i) & 1) == 1) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ protected static int getFlagsFromAllowedIfds(int[] allowedIfds) {
+ if (allowedIfds == null || allowedIfds.length == 0) {
+ return 0;
+ }
+ int flags = 0;
+ int[] ifds = IfdData.getIfds();
+ for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
+ for (int j : allowedIfds) {
+ if (ifds[i] == j) {
+ flags |= 1 << i;
+ break;
+ }
+ }
+ }
+ return flags;
+ }
+
+ protected static short getTypeFromInfo(int info) {
+ return (short) ((info >> 16) & 0x0ff);
+ }
+
+ protected static int getComponentCountFromInfo(int info) {
+ return info & 0x0ffff;
+ }
+
+}