/*
* 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;
}
}
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