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SubwayTooter-Android-App/exif/src/main/java/it/sephiroth/android/library/exif2/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 it.sephiroth.android.library.exif2;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.SystemClock;
import android.util.Log;
import android.util.SparseIntArray;
import org.apache.commons.io.IOUtils;
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.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteOrder;
import java.nio.channels.FileChannel;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
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 {
private static final String TAG = "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 );
/**
* Value is unsigned int.<br />
* (Read only tag) The compression scheme used for the image data. When a primary image is JPEG compressed, this designation is
* not necessary and is omitted. When thumbnails use JPEG compression, this tag value is set to 6.
* <ul>
* <li>1 = uncompressed</li>
* <li>6 = JPEG compression (thumbnails only)</li>
* <li>Other = reserved</li>
*/
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 );
/**
* Value is ascii string<br />
* The manufacturer of the recording equipment. This is the manufacturer of the DSC, scanner, video digitizer or other equipment
* that generated the image. When the field is left blank, it is treated as unknown.
*/
public static final int TAG_MAKE = defineTag( IfdId.TYPE_IFD_0, (short) 0x010F );
/**
* Value is ascii string<br />
* The model name or model number of the equipment. This is the model name of number of the DSC, scanner, video digitizer or
* other equipment that generated the image. When the field is left blank, it is treated as unknown.
*/
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 );
/**
* Value is int<br />
* The orientation of the camera relative to the scene, when the image was captured. The start point of stored data is:
* <ul>
* <li>'0' undefined</li>
* <li>'1' normal</li>
* <li>'2' flip horizontal</li>
* <li>'3' rotate 180</li>
* <li>'4' flip vertical</li>
* <li>'5' transpose, flipped about top-left <--> bottom-right axis</li>
* <li>'6' rotate 90 cw</li>
* <li>'7' transverse, flipped about top-right <--> bottom-left axis</li>
* <li>'8' rotate 270</li>
* <li>'9' undefined</li>
* </ul>
*/
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_INTEROP_VERSION = defineTag(IfdId.TYPE_IFD_INTEROPERABILITY, (short)0x0002);
/**
* Value is unsigned double.<br />
* Display/Print resolution of image. Large number of digicam uses 1/72inch, but it has no mean because personal computer doesn't
* use this value to display/print out.
*/
public static final int TAG_X_RESOLUTION = defineTag( IfdId.TYPE_IFD_0, (short) 0x011A );
/**
* @see #TAG_X_RESOLUTION
*/
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 );
/**
* Value is unsigned int.<br />
* Unit of XResolution(0x011a)/YResolution(0x011b)
* <ul>
* <li>'1' means no-unit ( use inch )</li>
* <li>'2' inch</li>
* <li>'3' centimeter</li>
* <li>'4' millimeter</li>
* <li>'5' micrometer</li>
* </ul>
*/
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 );
/**
* Value is ascii string<br />
* Shows firmware(internal software of digicam) version number.
*/
public static final int TAG_SOFTWARE = defineTag( IfdId.TYPE_IFD_0, (short) 0x0131 );
/**
* Value is ascii string (20)<br />
* Date/Time of image was last modified. Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes. In usual, it has the same
* value of DateTimeOriginal(0x9003)
*/
public static final int TAG_DATE_TIME = defineTag( IfdId.TYPE_IFD_0, (short) 0x0132 );
/**
* Vallue is ascii String<br />
* This tag records the name of the camera owner, photographer or image creator. The detailed format is not specified, but it is
* recommended that the information be written as in the example below for ease of Interoperability. When the field is left
* blank, it is treated as unknown.
*/
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 );
/**
* Values is ascii string<br />
* Shows copyright information
*/
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
/**
* Value is unsigned double<br />
* Exposure time (reciprocal of shutter speed). Unit is second
*/
public static final int TAG_EXPOSURE_TIME = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x829A );
/**
* Value is unsigned double<br />
* The actual F-number(F-stop) of lens when the image was taken
*
* @see #TAG_APERTURE_VALUE
*/
public static final int TAG_F_NUMBER = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x829D );
/**
* Value is unsigned int.<br />
* Exposure program that the camera used when image was taken.
* <ul>
* <li>'1' means manual control</li>
* <li>'2' program normal</li>
* <li>'3' aperture priority</li>
* <li>'4' shutter priority</li>
* <li>'5' program creative (slow program)</li>
* <li>'6' program action(high-speed program)</li>
* <li>'7' portrait mode</li>
* <li>'8' landscape mode.</li>
* </ul>
*/
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 );
/**
* Value is unsigned int.<br />
* CCD sensitivity equivalent to Ag-Hr film speedrate.<br />
* Indicates the ISO Speed and ISO Latitude of the camera or input device as specified in ISO 12232
*/
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 );
/**
* ASCII string (4).<br />
* The version of this standard supported. Nonexistence of this field is taken to mean nonconformance to the standard (see
* section 4.2). Conformance to this standard is indicated by recording "0220" as 4-byte ASCII
*/
public static final int TAG_EXIF_VERSION = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9000 );
/**
* Value is ascii string (20)<br />
* Date/Time of original image taken. This value should not be modified by user program.
*/
public static final int TAG_DATE_TIME_ORIGINAL = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9003 );
/**
* Value is ascii string (20)<br />
* Date/Time of image digitized. Usually, it contains the same value of DateTimeOriginal(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 );
/**
* Value is signed double.<br />
* Shutter speed. To convert this value to ordinary 'Shutter Speed'; calculate this value's power of 2, then reciprocal. For
* example, if value is '4', shutter speed is 1/(2^4)=1/16 second.
*/
public static final int TAG_SHUTTER_SPEED_VALUE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9201 );
/**
* Value is unsigned double<br />
* The actual aperture value of lens when the image was taken.<br />
* To convert this value to ordinary F-number(F-stop), calculate this value's power of root 2 (=1.4142).<br />
* For example, if value is '5', F-number is 1.4142^5 = F5.6<br />
* <p/>
* <pre>
* FNumber = Math.exp( ApertureValue * Math.log( 2 ) * 0.5 );
* </pre>
*
* @see #TAG_F_NUMBER
*/
public static final int TAG_APERTURE_VALUE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9202 );
/**
* Value is signed double<br />
* Brightness of taken subject, unit is EV.
*/
public static final int TAG_BRIGHTNESS_VALUE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9203 );
/**
* Value is signed double.<br />
* The exposure bias. The unit is the APEX value. Ordinarily it is given in the range of -99.99 to 99.99
*/
public static final int TAG_EXPOSURE_BIAS_VALUE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9204 );
/**
* Value is unsigned double.<br />
* Maximum aperture value of lens.<br />
* You can convert to F-number by calculating power of root 2 (same process of ApertureValue(0x9202).<br />
* <p/>
* <pre>
* FNumber = Math.exp( MaxApertureValue * Math.log( 2 ) * 0.5 )
* </pre>
*/
public static final int TAG_MAX_APERTURE_VALUE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9205 );
/**
* Value if signed double.<br />
* Distance to focus point, unit is meter. If value < 0 then focus point is infinite
*/
public static final int TAG_SUBJECT_DISTANCE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9206 );
/**
* Value is unsigned int.<br />
* Exposure metering method:
* <ul>
* <li>0 = unknown</li>
* <li>1 = Average</li>
* <li>2 = CenterWeightedAverage</li>
* <li>3 = Spot</li>
* <li>4 = MultiSpot</li>
* <li>5 = Pattern</li>
* <li>6 = Partial</li>
* <li>Other = reserved</li>
* <li>255 = other</li>
* </ul>
*/
public static final int TAG_METERING_MODE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9207 );
/**
* Value is unsigned int.<br />
* Light source, actually this means white balance setting.
* <ul>
* <li>0 = means auto</li>
* <li>1 = Daylight</li>
* <li>2 = Fluorescent</li>
* <li>3 = Tungsten (incandescent light)</li>
* <li>4 = Flash</li>
* <li>9 = Fine weather</li>
* <li>10 = Cloudy weather</li>
* <li>11 = Shade</li>
* <li>12 = Daylight fluorescent (D 5700 - 7100K)</li>
* <li>13 = Day white fluorescent (N 4600 - 5400K)</li>
* <li>14 = Cool white fluorescent (W 3900 - 4500K)</li>
* <li>15 = White fluorescent (WW 3200 - 3700K)</li>
* <li>17 = Standard light A</li>
* <li>18 = Standard light B</li>
* <li>19 = Standard light C</li>
* <li>20 = D55</li>
* <li>21 = D65</li>
* <li>22 = D75</li>
* <li>23 = D50</li>
* <li>24 = ISO studio tungsten</li>
* <li>255 = other light source</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_LIGHT_SOURCE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9208 );
/**
* Value is unsigned integer<br />
* The 8 bits can be extracted and evaluated in this way:<br />
* <ol>
* <li>Bit 0 indicates the flash firing status</li>
* <li>bits 1 and 2 indicate the flash return status</li>
* <li>bits 3 and 4 indicate the flash mode</li>
* <li>bit 5 indicates whether the flash function is present</li>
* <li>and bit 6 indicates "red eye" mode</li>
* <li>bit 7 unused</li>
* </ol>
* <p/>
* Resulting Flash tag values are:<br />
* <ul>
* <li>0000.H = Flash did not fire</li>
* <li>0001.H = Flash fired</li>
* <li>0005.H = Strobe return light not detected</li>
* <li>0007.H = Strobe return light detected</li>
* <li>0009.H = Flash fired, compulsory flash mode</li>
* <li>000D.H = Flash fired, compulsory flash mode, return light not detected</li>
* <li>000F.H = Flash fired, compulsory flash mode, return light detected</li>
* <li>0010.H = Flash did not fire, compulsory flash mode</li>
* <li>0018.H = Flash did not fire, auto mode</li>
* <li>0019.H = Flash fired, auto mode</li>
* <li>001D.H = Flash fired, auto mode, return light not detected</li>
* <li>001F.H = Flash fired, auto mode, return light detected</li>
* <li>0020.H = No flash function</li>
* <li>0041.H = Flash fired, red-eye reduction mode</li>
* <li>0045.H = Flash fired, red-eye reduction mode, return light not detected</li>
* <li>0047.H = Flash fired, red-eye reduction mode, return light detected</li>
* <li>0049.H = Flash fired, compulsory flash mode, red-eye reduction mode</li>
* <li>004D.H = Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected</li>
* <li>004F.H = Flash fired, compulsory flash mode, red-eye reduction mode, return light detected</li>
* <li>0059.H = Flash fired, auto mode, red-eye reduction mode</li>
* <li>005D.H = Flash fired, auto mode, return light not detected, red-eye reduction mode</li>
* <li>005F.H = Flash fired, auto mode, return light detected, red-eye reduction mode</li>
* <li>Other = reserved</li>
* </ul>
*
* @see <a href="http://www.exif.org/Exif2-2.PDF">http://www.exif.org/Exif2-2.PDF</a>
*/
public static final int TAG_FLASH = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x9209 );
/**
* Value is unsigned double<br />
* Focal length of lens used to take image. Unit is millimeter.
*/
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 );
/**
* Value is int.<br />
* Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment. If a color space
* other than sRGB is used, Uncalibrated (=FFFF.H) is set. Image data recorded as Uncalibrated can be treated as sRGB when it is
* converted to Flashpix. On sRGB see Annex E.
* <ul>
* <li>'1' = sRGB</li>
* <li>'FFFF' = Uncalibrated</li>
* <li>'other' = Reserved</li>
* </ul>
*/
public static final int TAG_COLOR_SPACE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA001 );
/**
* Value is unsigned int.<br />
* Specific to compressed data; the valid width of the meaningful image. When a compressed file is recorded, the valid width of
* the meaningful image shall be recorded in this tag, whether or not there is padding data or a restart marker. This tag should
* not exist in an uncompressed file.
*/
public static final int TAG_PIXEL_X_DIMENSION = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA002 );
/**
* @see #TAG_PIXEL_X_DIMENSION
*/
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 );
/**
* Value is unsigned double.<br />
* Indicates the number of pixels in the image width (X) direction per FocalPlaneResolutionUnit on the camera focal plane. CCD's
* pixel density
*
* @see #TAG_FOCAL_PLANE_RESOLUTION_UNIT
*/
public static final int TAG_FOCAL_PLANE_X_RESOLUTION = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA20E );
/**
* @see #TAG_FOCAL_PLANE_X_RESOLUTION
*/
public static final int TAG_FOCAL_PLANE_Y_RESOLUTION = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA20F );
/**
* Value is unsigned int.<br />
* Unit of FocalPlaneXResoluton/FocalPlaneYResolution.
* <ul>
* <li>'1' means no-unit</li>
* <li>'2' inch</li>
* <li>'3' centimeter</li>
* <li>'4' millimeter</li>
* <li>'5' micrometer</li>
* </ul>
* <p/>
* This tag can be used to calculate the CCD Width:
* <p/>
* <pre>
* CCDWidth = ( PixelXDimension * FocalPlaneResolutionUnit / FocalPlaneXResolution )
* </pre>
*/
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 );
/**
* Value is unsigned int.<br />
* Indicates the image sensor type on the camera or input device. The values are as follows:
* <ul>
* <li>1 = Not defined</li>
* <li>2 = One-chip color area sensor</li>
* <li>3 = Two-chip color area sensor JEITA CP-3451 - 41</li>
* <li>4 = Three-chip color area sensor</li>
* <li>5 = Color sequential area sensor</li>
* <li>7 = Trilinear sensor</li>
* <li>8 = Color sequential linear sensor</li>
* <li>Other = reserved</li>
* </ul>
*/
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 );
/**
* Value is int.<br />
* This tag indicates the exposure mode set when the image was shot. In auto-bracketing mode, the camera shoots a series of
* frames of the same scene at different exposure settings.
* <ul>
* <li>0 = Auto exposure</li>
* <li>1 = Manual exposure</li>
* <li>2 = Auto bracket</li>
* <li>Other = reserved</li>
* </ul>
*/
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 );
/**
* Value is double.<br />
* This tag indicates the digital zoom ratio when the image was shot. If the numerator of the recorded value is 0, this indicates
* that digital zoom was not used
*/
public static final int TAG_DIGITAL_ZOOM_RATIO = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA404 );
/**
* Value is unsigned int.<br />
* This tag indicates the equivalent focal length assuming a 35mm film camera, in mm.<br />
* Exif 2.2 tag, usually not present, it can be calculated by:
* <p/>
* <pre>
* CCDWidth = ( PixelXDimension * FocalplaneUnits / FocalplaneXRes );
* FocalLengthIn35mmFilm = ( FocalLength / CCDWidth * 36 + 0.5 );
* </pre>
*/
public static final int TAG_FOCAL_LENGTH_IN_35_MM_FILE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA405 );
/**
* Value is int.<br />
* This tag indicates the type of scene that was shot. It can also be used to record the mode in which the image was shot. Note
* that this differs from the scene type (SceneType) tag.
* <ul>
* <li>0 = Standard</li>
* <li>1 = Landscape</li>
* <li>2 = Portrait</li>
* <li>3 = Night scene</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_SCENE_CAPTURE_TYPE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA406 );
/**
* Value is int.<br />
* This tag indicates the degree of overall image gain adjustment.
* <ul>
* <li>0 = None</li>
* <li>1 = Low gain up</li>
* <li>2 = High gain up</li>
* <li>3 = Low gain down</li>
* <li>4 = High gain down</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_GAIN_CONTROL = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA407 );
/**
* Value is int.<br />
* This tag indicates the direction of contrast processing applied by the camera when the image was shot.
* <ul>
* <li>0 = Normal</li>
* <li>1 = Soft</li>
* <li>2 = Hard</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_CONTRAST = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA408 );
/**
* Value is int.<br />
* This tag indicates the direction of saturation processing applied by the camera when the image was shot.
* <ul>
* <li>0 = Normal</li>
* <li>1 = Low saturation</li>
* <li>2 = High saturation</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_SATURATION = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA409 );
/**
* Value is int.<br />
* This tag indicates the direction of sharpness processing applied by the camera when the image was shot
* <ul>
* <li>0 = Normal</li>
* <li>1 = Soft</li>
* <li>2 = Hard</li>
* <li>Other = reserved</li>
* </ul>
*/
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 );
/**
* Value is int.<br />
* This tag indicates the distance to the subject.
* <ul>
* <li>0 = unknown</li>
* <li>1 = Macro</li>
* <li>2 = Close view</li>
* <li>3 = Distant view</li>
* <li>Other = reserved</li>
* </ul>
*/
public static final int TAG_SUBJECT_DISTANCE_RANGE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA40C );
/**
* {@link ExifTag#TYPE_ASCII}
*/
public static final int TAG_IMAGE_UNIQUE_ID = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA420 );
/**
* Lens Specifications. The value it's a 4 rational containing:
* <ol>
* <li>Minimum focal length (in mm)</li>
* <li>Maximum focal length (in mm)</li>
* <li>Minimum F Number in the minimum focal length</li>
* <li>Maximum F Number in the maximum focal length</li>
* </ol>
*
* {@link ExifTag#TYPE_RATIONAL}
* @since EXIF 2.3
* @see it.sephiroth.android.library.exif2.ExifUtil#processLensSpecifications(Rational[])
*/
public static final int TAG_LENS_SPECS = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA432 );
/**
* Lens maker
* {@link ExifTag#TYPE_ASCII}
* @since EXIF 2.3
*/
public static final int TAG_LENS_MAKE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA433 );
/**
* Lens model name and number
* {@link ExifTag#TYPE_ASCII}
* @since EXIF 2.3
*/
public static final int TAG_LENS_MODEL = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0xA434 );
/**
* The SensitivityType tag indicates which one of the parameters of ISO12232 is the
* PhotographicSensitivity tag. Although it is an optional tag, it should be recorded
* when a PhotographicSensitivity tag is recorded.
* Value = 4, 5, 6, or 7 may be used in case that the values of plural
* parameters are the same.<br/>
* Values:
* <ul>
* <li>0: Unknown</li>
* <li>1: Standardoutputsensitivity(SOS)</li>
* <li>2: Recommended exposure index (REI)</li>
* <li>3: ISOspeed</li>
* <li>4: Standard output sensitivity (SOS) and recommended exposure index (REI)</li>
* <li>5: Standardoutputsensitivity(SOS)andISOspeed</li>
* <li>6: Recommendedexposureindex(REI)andISOspeed</li>
* <li>7: Standard output sensitivity (SOS) and recommended exposure index (REI) and ISO speed</li>
* <li>Other: Reserved</li>
* </ul>
*
* {@link ExifTag#TYPE_UNSIGNED_SHORT}
* @see it.sephiroth.android.library.exif2.ExifInterface.SensitivityType
* @since EXIF 2.3
*/
public static final int TAG_SENSITIVITY_TYPE = defineTag( IfdId.TYPE_IFD_EXIF, (short) 0x8830 );
// IFD GPS tags
public static final int TAG_GPS_VERSION_ID = defineTag( IfdId.TYPE_IFD_GPS, (short) 0 );
/**
* Value is string(1)<br />
* Indicates whether the latitude is north or south latitude. The ASCII value 'N' indicates north latitude, and 'S' is south latitude.
*/
public static final int TAG_GPS_LATITUDE_REF = defineTag( IfdId.TYPE_IFD_GPS, (short) 1 );
/**
* Value is string.<br />
* Indicates the latitude. The latitude is expressed as three RATIONAL values giving the degrees, minutes, and
* seconds, respectively. If latitude is expressed as degrees, minutes and seconds, a typical format would be
* dd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two
* decimal places, the format would be dd/1,mmmm/100,0/1.
*/
public static final int TAG_GPS_LATITUDE = defineTag( IfdId.TYPE_IFD_GPS, (short) 2 );
/**
* Value is string(1)<br />
* Indicates whether the longitude is east or west longitude. ASCII 'E' indicates east longitude, and 'W' is west longitude.
*/
public static final int TAG_GPS_LONGITUDE_REF = defineTag( IfdId.TYPE_IFD_GPS, (short) 3 );
/**
* Value is string.<br />
* Indicates the longitude. The longitude is expressed as three RATIONAL values giving the degrees, minutes, and
* seconds, respectively. If longitude is expressed as degrees, minutes and seconds, a typical format would be
* ddd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two
* decimal places, the format would be ddd/1,mmmm/100,0/1.
*/
public static final int TAG_GPS_LONGITUDE = defineTag( IfdId.TYPE_IFD_GPS, (short) 4 );
/**
* Value is byte<br />
* Indicates the altitude used as the reference altitude. If the reference is sea level and the altitude is above sea level,
* 0 is given. If the altitude is below sea level, a value of 1 is given and the altitude is indicated as an absolute value in
* the GPSAltitude tag. The reference unit is meters. Note that this tag is BYTE type, unlike other reference tags
*/
public static final int TAG_GPS_ALTITUDE_REF = defineTag( IfdId.TYPE_IFD_GPS, (short) 5 );
/**
* Value is string.<br />
* Indicates the altitude based on the reference in GPSAltitudeRef. Altitude is expressed as one RATIONAL value. The reference unit is meters.
*/
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 );
/**
* Value is string(1).<br />
* Indicates the unit used to express the GPS receiver speed of movement. 'K' 'M' and 'N' represents kilometers per hour, miles per hour, and knots.
*/
public static final int TAG_GPS_SPEED_REF = defineTag( IfdId.TYPE_IFD_GPS, (short) 12 );
/**
* Value is string.<br />
* Indicates the speed of GPS receiver movement
*/
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 );
public static final ByteOrder DEFAULT_BYTE_ORDER = ByteOrder.BIG_ENDIAN;
private ExifData mData = new ExifData( DEFAULT_BYTE_ORDER );
private static final String NULL_ARGUMENT_STRING = "Argument is null";
private static final String GPS_DATE_FORMAT_STR = "yyyy:MM:dd";
private static final DateFormat mGPSDateStampFormat = new SimpleDateFormat( GPS_DATE_FORMAT_STR );
private static final String DATETIME_FORMAT_STR = "yyyy:MM:dd kk:mm:ss";
private static final DateFormat mDateTimeStampFormat = new SimpleDateFormat( DATETIME_FORMAT_STR );
/**
* 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 ) );
}
private final Calendar mGPSTimeStampCalendar = Calendar.getInstance( TimeZone.getTimeZone( "UTC" ) );
private SparseIntArray mTagInfo = null;
public ExifInterface() {
mGPSDateStampFormat.setTimeZone( TimeZone.getTimeZone( "UTC" ) );
}
/**
* 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 );
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
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;
}
}
/**
* Given the value from {@link #TAG_FOCAL_PLANE_RESOLUTION_UNIT} or {@link #TAG_RESOLUTION_UNIT}
* this method will return the corresponding value in millimeters
*
* @param resolution {@link #TAG_FOCAL_PLANE_RESOLUTION_UNIT} or {@link #TAG_RESOLUTION_UNIT}
* @return resolution in millimeters
*/
@SuppressWarnings( "unused" )
public double getResolutionUnit( int resolution ) {
switch( resolution ) {
case 1:
case ResolutionUnit.INCHES:
return 25.4;
case ResolutionUnit.CENTIMETERS:
return 10;
case ResolutionUnit.MILLIMETERS:
return 1;
case ResolutionUnit.MICROMETERS:
return .001;
default:
return 25.4;
}
}
/**
* 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.startsWith( "S" ) || reference.startsWith( "W" ) ) ) {
return - result;
}
return result;
} catch( ArrayIndexOutOfBoundsException e ) {
throw new IllegalArgumentException();
}
}
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;
}
/**
* 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.
* @param options bit flag which defines which type of tags to process, see {@link it.sephiroth.android.library.exif2.ExifInterface.Options}
* @see #readExif(java.io.InputStream, int)
* @throws java.io.IOException
*/
@SuppressWarnings( "unused" )
public void readExif( String inFileName, int options ) throws IOException {
if( inFileName == null ) {
throw new IllegalArgumentException( NULL_ARGUMENT_STRING );
}
InputStream is = null;
try {
is = new BufferedInputStream( new FileInputStream( inFileName ) );
readExif( is, options );
} catch( IOException e ) {
closeSilently( is );
throw e;
}
is.close();
}
/**
* Reads the exif tags from an InputStream, clearing this ExifInterface
* object's existing exif tags.
* <pre>
* ExifInterface exif = new ExifInterface();
* exif.readExif( stream, Options.OPTION_IFD_0 | Options.OPTION_IFD_1 | Options.OPTION_IFD_EXIF );
* ...
* // to request all the options use the OPTION_ALL bit mask
* exif.readExif( stream, Options.OPTION_ALL );
* </pre>
*
* @param inStream an InputStream containing a jpeg compressed image.
* @param options bit flag which defines which type of tags to process, see {@link it.sephiroth.android.library.exif2.ExifInterface.Options}
* @throws java.io.IOException
*/
@SuppressWarnings( "unused" )
public void readExif( InputStream inStream, int options ) throws IOException {
if( inStream == null ) {
throw new IllegalArgumentException( NULL_ARGUMENT_STRING );
}
ExifData d;
try {
d = new ExifReader( this ).read( inStream, options );
} catch( ExifInvalidFormatException e ) {
throw new IOException( "Invalid exif format : " + e );
}
mData = d;
}
protected static void closeSilently( Closeable c ) {
if( c != null ) {
try {
c.close();
} catch( Throwable e ) {
// ignored
}
}
}
/**
* 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 );
}
/**
* 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 ) {
if( null == tags ) return;
for( ExifTag t : tags ) {
setTag( t );
}
}
/**
* 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 );
}
@SuppressWarnings( "unused" )
public void writeExif( final String dstFilename ) throws IOException {
Log.i( TAG, "writeExif: " + dstFilename );
// create a backup file
File dst_file = new File( dstFilename );
File bak_file = new File( dstFilename + ".t" );
// try to delete old copy of backup
// Log.d( TAG, "delete old backup file" );
bak_file.delete();
// rename dst file into backup file
// Log.d( TAG, "rename dst into bak" )
// if( ! dst_file.renameTo( bak_file ) ) return;
try {
// Log.d( TAG, "try to write into dst" );
// writeExif( bak_file.getAbsolutePath(), dst_file.getAbsolutePath() );
// Trying to write into bak_file using dst_file as source
writeExif( dst_file.getAbsolutePath(), bak_file.getAbsolutePath() );
// Now switch bak into dst
// Log.d( TAG, "rename the bak into dst" );
bak_file.renameTo( dst_file );
} catch( IOException e ) {
throw e;
} finally {
// deleting backup file
bak_file.delete();
}
}
@SuppressWarnings( "unused" )
public void writeExif( final String srcFilename, final String dstFilename ) throws IOException {
Log.i( TAG, "writeExif: " + dstFilename );
// src and dst cannot be the same
if( srcFilename.equals( dstFilename ) ) return;
// srcFilename is used *ONLY* to read the image uncompressed data
// exif tags are not used here
// 3. rename dst file into backup file
FileInputStream input = new FileInputStream( srcFilename );
FileOutputStream output = new FileOutputStream( dstFilename );
int position = writeExif_internal( input, output, mData );
// 7. write the rest of the image..
FileChannel in_channel = input.getChannel();
FileChannel out_channel = output.getChannel();
in_channel.transferTo( position, in_channel.size() - position, out_channel );
output.flush();
IOUtils.closeQuietly( input );
IOUtils.closeQuietly( output );
}
public void writeExif( final InputStream input, final String dstFilename ) throws IOException {
Log.i( TAG, "writeExif: " + dstFilename );
// inpur is used *ONLY* to read the image uncompressed data
// exif tags are not used here
FileOutputStream output = new FileOutputStream( dstFilename );
writeExif_internal( input, output, mData );
// 7. write the rest of the image..
IOUtils.copy( input, output );
output.flush();
output.close();
}
@SuppressWarnings( "unused" )
public void writeExif( final Bitmap input, final String dstFilename, int quality ) throws IOException {
Log.i( TAG, "writeExif: " + dstFilename );
// inpur is used *ONLY* to read the image uncompressed data
// exif tags are not used here
ByteArrayOutputStream out = new ByteArrayOutputStream();
input.compress( Bitmap.CompressFormat.JPEG, quality, out );
ByteArrayInputStream in = new ByteArrayInputStream( out.toByteArray() );
out.close();
writeExif( in, dstFilename );
}
private static int writeExif_internal( final InputStream input, final OutputStream output, ExifData exifData ) throws IOException {
// Log.i( TAG, "writeExif_internal" );
// 1. read the output file first
ExifInterface src_exif = new ExifInterface();
src_exif.readExif( input, 0 );
// 4. Create the destination outputstream
// 5. write headers
output.write( 0xFF );
output.write( JpegHeader.TAG_SOI );
final List<ExifParser.Section> sections = src_exif.mData.getSections();
// 6. write all the sections from the srcFilename
if( sections.get( 0 ).type != JpegHeader.TAG_M_JFIF ) {
Log.w( TAG, "first section is not a JFIF or EXIF tag" );
output.write( JpegHeader.JFIF_HEADER );
}
// 6.1 write the *new* EXIF tag
ExifOutputStream eo = new ExifOutputStream( src_exif );
eo.setExifData( exifData );
eo.writeExifData( output );
// 6.2 write all the sections except for the SOS ( start of scan )
for( int a = 0; a < sections.size() - 1; a++ ) {
ExifParser.Section current = sections.get( a );
// Log.v( TAG, "writing section.. " + String.format( "0x%2X", current.type ) );
output.write( 0xFF );
output.write( current.type );
output.write( current.data );
}
// 6.3 write the last SOS marker
ExifParser.Section current = sections.get( sections.size() - 1 );
// Log.v( TAG, "writing last section.. " + String.format( "0x%2X", current.type ) );
output.write( 0xFF );
output.write( current.type );
output.write( current.data );
// return the position where the input stream should be copied
return src_exif.mData.mUncompressedDataPosition;
}
/**
* 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();
}
/**
* 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.
* @param options bit flag which defines which type of tags to process, see {@link it.sephiroth.android.library.exif2.ExifInterface.Options}
* @throws java.io.IOException
* @see #readExif(java.io.InputStream, int)
*/
@SuppressWarnings( "unused" )
public void readExif( byte[] jpeg, int options ) throws IOException {
readExif( new ByteArrayInputStream( jpeg ), options );
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
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(int)} 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.
*/
@SuppressWarnings( "unused" )
public List<ExifTag> getTagsForIfdId( int ifdId ) {
return mData.getAllTagsForIfd( 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 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 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 );
}
protected SparseIntArray getTagInfo() {
if( mTagInfo == null ) {
mTagInfo = new SparseIntArray();
initTagInfo();
}
return mTagInfo;
}
/**
* Returns the default IFD for a tag constant.
*/
public static int getTrueIfd( int tag ) {
return tag >>> 16;
}
/**
* Returns the TID for a tag constant.
*/
public static short getTrueTagKey( int tag ) {
// Truncate
return (short) tag;
}
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 );
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 );
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 );
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 );
mTagInfo.put( ExifInterface.TAG_MODEL, ifdFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_SOFTWARE, ifdFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_ARTIST, ifdFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_COPYRIGHT, ifdFlags | ExifTag.TYPE_ASCII << 16 );
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 );
mTagInfo.put( ExifInterface.TAG_USER_COMMENT, exifFlags | ExifTag.TYPE_UNDEFINED << 16 );
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 );
mTagInfo.put( ExifInterface.TAG_SUB_SEC_TIME_ORIGINAL, exifFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_SUB_SEC_TIME_DIGITIZED, exifFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_IMAGE_UNIQUE_ID, exifFlags | ExifTag.TYPE_ASCII << 16 | 33 );
mTagInfo.put( ExifInterface.TAG_LENS_SPECS, exifFlags | ExifTag.TYPE_RATIONAL << 16 | 4 );
mTagInfo.put( ExifInterface.TAG_LENS_MAKE, exifFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_LENS_MODEL, exifFlags | ExifTag.TYPE_ASCII << 16 );
mTagInfo.put( ExifInterface.TAG_SENSITIVITY_TYPE, exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 | 1 );
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 );
mTagInfo.put( ExifInterface.TAG_ISO_SPEED_RATINGS, exifFlags | ExifTag.TYPE_UNSIGNED_SHORT << 16 );
mTagInfo.put( ExifInterface.TAG_OECF, exifFlags | ExifTag.TYPE_UNDEFINED << 16 );
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 );
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 );
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 );
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 );
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 );
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 );
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 );
mTagInfo.put( ExifInterface.TAG_GPS_AREA_INFORMATION, gpsFlags | ExifTag.TYPE_UNDEFINED << 16 );
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 );
mTagInfo.put( TAG_INTEROP_VERSION, interopFlags | ExifTag.TYPE_UNDEFINED << 16 | 4 );
}
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;
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
public Object getTagValue( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagValue( 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();
}
/**
* @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
*/
@SuppressWarnings( "unused" )
public Long getTagLongValue( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagLongValue( 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[] getTagLongValues( int tagId, int ifdId ) {
ExifTag t = getTag( tagId, ifdId );
if( t == null ) {
return null;
}
return t.getValueAsLongs();
}
/**
* @see #getTagValue
*/
public Integer getTagIntValue( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagIntValue( 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 int[] getTagIntValues( int tagId, int ifdId ) {
ExifTag t = getTag( tagId, ifdId );
if( t == null ) {
return null;
}
return t.getValueAsInts();
}
/**
* @see #getTagValue
*/
public Byte getTagByteValue( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagByteValue( 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[] getTagByteValues( int tagId, int ifdId ) {
ExifTag t = getTag( tagId, ifdId );
if( t == null ) {
return null;
}
return t.getValueAsBytes();
}
/**
* @see #getTagValue
*/
public Rational getTagRationalValue( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagRationalValue( 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] );
}
/*
* Getter methods that are similar to getTagValue. Null is returned if the
* tag value cannot be cast into the return type.
*/
/**
* @see #getTagValue
*/
public Rational[] getTagRationalValues( int tagId, int ifdId ) {
ExifTag t = getTag( tagId, ifdId );
if( t == null ) {
return null;
}
return t.getValueAsRationals();
}
/**
* @see #getTagValue
*/
@SuppressWarnings( "unused" )
public long[] getTagLongValues( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagLongValues( tagId, ifdId );
}
/**
* @see #getTagValue
*/
@SuppressWarnings( "unused" )
public int[] getTagIntValues( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagIntValues( tagId, ifdId );
}
/**
* @see #getTagValue
*/
@SuppressWarnings( "unused" )
public byte[] getTagByteValues( int tagId ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return getTagByteValues( tagId, ifdId );
}
/**
* @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.
*/
@SuppressWarnings( "unused" )
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
return info != 0 && getComponentCountFromInfo( info ) != ExifTag.SIZE_UNDEFINED;
}
protected static int getComponentCountFromInfo( int info ) {
return info & 0x0ffff;
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
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.
*/
@SuppressWarnings( "unused" )
public int getActualTagCount( int tagId, int ifdId ) {
ExifTag t = getTag( tagId, ifdId );
if( t == null ) {
return 0;
}
return t.getComponentCount();
}
/**
* 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()
*/
@SuppressWarnings( "unused" )
public short getDefinedTagType( int tagId ) {
int info = getTagInfo().get( tagId );
if( info == 0 ) {
return - 1;
}
return getTypeFromInfo( info );
}
protected static short getTypeFromInfo( int info ) {
return (short) ( ( info >> 16 ) & 0x0ff );
}
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 );
return new ExifTag( getTrueTagKey( tagId ), type, definedCount, ifdId, hasDefinedCount );
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
public boolean setTagValue( int tagId, Object val ) {
int ifdId = getDefinedTagDefaultIfd( tagId );
return setTagValue( tagId, ifdId, val );
}
/**
* 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 );
return t != null && t.setValue( val );
}
/**
* 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 );
}
/**
* 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 );
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
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;
}
@SuppressWarnings( "unused" )
protected int getTagDefinition( short tagId, int defaultIfd ) {
return getTagInfo().get( defineTag( defaultIfd, tagId ) );
}
/**
* 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 );
}
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 );
}
@SuppressWarnings( "unused" )
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}.
*/
@SuppressWarnings( "unused" )
public void removeTagDefinition( int tagId ) {
getTagInfo().delete( tagId );
}
/**
* Resets tag definitions to the default ones.
*/
@SuppressWarnings( "unused" )
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.
*/
@SuppressWarnings( "unused" )
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();
}
/**
* Returns the JPEG quality used to generate the image
* or 0 if not found
*
* @return
*/
public int getQualityGuess() {
return mData.getQualityGuess();
}
/**
* this gives information about the process used to create the JPEG file.
* Possible values are:
* <ul>
* <li>'0' Unknown</li>
* <li>'192' Baseline</li>
* <li>'193' Extended sequential</li>
* <li>'194' Progressive</li>
* <li>'195' Lossless</li>
* <li>'197' Differential sequential</li>
* <li>'198' Differential progressive</li>
* <li>'199' Differential lossless</li>
* <li>'201' Extended sequential, arithmetic coding</li>
* <li>'202' Progressive, arithmetic coding</li>
* <li>'203' Lossless, arithmetic coding</li>
* <li>'205' Differential sequential, arithmetic coding</li>
* <li>'206' Differential progressive, arithmetic codng</li>
* <li>'207' Differential lossless, arithmetic coding</li>
* </ul>
*/
public short getJpegProcess() {
return mData.getJpegProcess();
}
/**
* Returns the Image size as decoded from the SOF marker
*/
public int[] getImageSize() {
return mData.getImageSize();
}
/**
* Check if thumbnail is compressed.
*
* @return true if the thumbnail is compressed.
*/
@SuppressWarnings( "unused" )
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();
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
public boolean setCompressedThumbnail( Bitmap thumb ) {
ByteArrayOutputStream thumbnail = new ByteArrayOutputStream();
if( ! thumb.compress( Bitmap.CompressFormat.JPEG, 90, thumbnail ) ) {
return false;
}
return setCompressedThumbnail( thumbnail.toByteArray() );
}
/**
* 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;
}
/**
* Clears the compressed thumbnail if it exists.
*/
@SuppressWarnings( "unused" )
public void removeCompressedThumbnail() {
mData.setCompressedThumbnail( null );
}
/**
* Decodes the user comment tag into string as specified in the EXIF
* standard. Returns null if decoding failed.
*/
@SuppressWarnings( "unused" )
public String getUserComment() {
return mData.getUserComment();
}
/**
* Return the altitude in meters. If the exif tag does not exist, return
* <var>defaultValue</var>.
*
* @param defaultValue the value to return if the tag is not available.
*/
@SuppressWarnings( "unused" )
public double getAltitude( double defaultValue ) {
Byte ref = getTagByteValue( TAG_GPS_ALTITUDE_REF );
Rational gpsAltitude = getTagRationalValue( TAG_GPS_ALTITUDE );
int seaLevel = 1;
if( null != ref ) {
seaLevel = ref.intValue() == 1 ? - 1 : 1;
}
if( gpsAltitude != null ) {
return gpsAltitude.toDouble() * seaLevel;
}
return defaultValue;
}
/**
* 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;
}
/**
* Returns a formatted String with the latitude representation:<br />
* 39° 8' 16.8" N
*/
public String getLatitude() {
Rational[] latitude = getTagRationalValues( TAG_GPS_LATITUDE );
String latitudeRef = getTagStringValue( TAG_GPS_LATITUDE_REF );
if( null == latitude || null == latitudeRef ) return null;
return convertRationalLatLonToString( latitude, latitudeRef );
}
/**
* Returns a formatted String with the longitude representation:<br />
* 77° 37' 51.6" W
*/
public String getLongitude() {
Rational[] longitude = getTagRationalValues( TAG_GPS_LONGITUDE );
String longitudeRef = getTagStringValue( TAG_GPS_LONGITUDE_REF );
if( null == longitude || null == longitudeRef ) return null;
return convertRationalLatLonToString( longitude, longitudeRef );
}
private static String convertRationalLatLonToString( Rational[] coord, String ref ) {
try {
double degrees = coord[0].toDouble();
double minutes = coord[1].toDouble();
double seconds = coord[2].toDouble();
ref = ref.substring( 0, 1 );
return String.format( "%1$.0f° %2$.0f' %3$.0f\" %4$s", degrees, minutes, seconds, ref.toUpperCase( Locale.getDefault() ) );
} catch( NumberFormatException e ) {
e.printStackTrace();
} catch( ArrayIndexOutOfBoundsException e ) {
e.printStackTrace();
}
return null;
}
/**
* Given an exif date time, like {@link #TAG_DATE_TIME} or {@link #TAG_DATE_TIME_DIGITIZED}
* returns a java Date object
*
* @param dateTimeString one of the value of {@link #TAG_DATE_TIME} or {@link #TAG_DATE_TIME_DIGITIZED}
* @param timeZone the target timezone
* @return the parsed date
*/
public static Date getDateTime( String dateTimeString, TimeZone timeZone ) {
if( dateTimeString == null ) return null;
DateFormat formatter = new SimpleDateFormat( DATETIME_FORMAT_STR );
formatter.setTimeZone( timeZone );
try {
return formatter.parse( dateTimeString );
} catch( IllegalArgumentException e ) {
e.printStackTrace();
} catch( ParseException e ) {
e.printStackTrace();
}
return null;
}
/**
* 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 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 );
}
/**
* 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;
}
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 getAllowedIfdFlagsFromInfo( int info ) {
return info >>> 24;
}
/**
* 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.
*/
@SuppressWarnings( "unused" )
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 ? GpsLatitudeRef.NORTH : GpsLatitudeRef.SOUTH );
ExifTag longRefTag = buildTag( TAG_GPS_LONGITUDE_REF, longitude >= 0 ? GpsLongitudeRef.EAST : GpsLongitudeRef.WEST );
if( latTag == null || longTag == null || latRefTag == null || longRefTag == null ) {
return false;
}
setTag( latTag );
setTag( longTag );
setTag( latRefTag );
setTag( longRefTag );
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 ) };
}
/**
* Creates and sets the GPS timestamp tag.
*
* @param timestamp a GPS timestamp.
* @return true if success, false if could not be created or set.
*/
@SuppressWarnings( "unused" )
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;
}
/**
* Return the aperture size, if present, 0 if missing
*/
public double getApertureSize() {
Rational rational = getTagRationalValue( TAG_F_NUMBER );
if( null != rational && rational.toDouble() > 0 ) {
return rational.toDouble();
}
rational = getTagRationalValue( TAG_APERTURE_VALUE );
if( null != rational && rational.toDouble() > 0 ) {
return Math.exp( rational.toDouble() * Math.log( 2 ) * 0.5 );
}
return 0;
}
/**
* Returns the lens model as string if any of the tags {@link #TAG_LENS_MODEL}
* or {@link #TAG_LENS_SPECS} are found
*
* @return the string representation of the lens spec
*/
public String getLensModelDescription() {
String lensModel = getTagStringValue( TAG_LENS_MODEL );
if( null != lensModel ) return lensModel;
Rational[] rat = getTagRationalValues( TAG_LENS_SPECS );
if( null != rat ) return ExifUtil.processLensSpecifications( rat );
return null;
}
/**
* 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>
*/
@SuppressWarnings( "unused" )
public static interface Orientation {
public static final short TOP_LEFT = 1;
public static final short TOP_RIGHT = 2;
public static final short BOTTOM_RIGHT = 3;
public static final short BOTTOM_LEFT = 4;
public static final short LEFT_TOP = 5;
public static final short RIGHT_TOP = 6;
public static final short RIGHT_BOTTOM = 7;
public static final short LEFT_BOTTOM = 8;
}
/**
* Constants for {@link #TAG_Y_CB_CR_POSITIONING}
*/
@SuppressWarnings( "unused" )
public static interface YCbCrPositioning {
public static final short CENTERED = 1;
public static final short CO_SITED = 2;
}
/**
* Constants for {@link #TAG_COMPRESSION}
*/
@SuppressWarnings( "unused" )
public static interface Compression {
public static final short UNCOMPRESSION = 1;
public static final short JPEG = 6;
}
// TODO: uncompressed thumbnail setters
/**
* Constants for {@link #TAG_RESOLUTION_UNIT}
*/
@SuppressWarnings( "unused" )
public static interface ResolutionUnit {
public static final short INCHES = 2;
public static final short CENTIMETERS = 3;
public static final short MILLIMETERS = 4;
public static final short MICROMETERS = 5;
}
/**
* Constants for {@link #TAG_PHOTOMETRIC_INTERPRETATION}
*/
@SuppressWarnings( "unused" )
public static interface PhotometricInterpretation {
public static final short RGB = 2;
public static final short YCBCR = 6;
}
/**
* Constants for {@link #TAG_PLANAR_CONFIGURATION}
*/
@SuppressWarnings( "unused" )
public static interface PlanarConfiguration {
public static final short CHUNKY = 1;
public static final short PLANAR = 2;
}
// Convenience methods:
/**
* Constants for {@link #TAG_EXPOSURE_PROGRAM}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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;
}
@SuppressWarnings( "unused" )
public static byte[] toBitArray( short value ) {
byte[] result = new byte[16];
for( int i = 0; i < 16; i++ ) {
result[15 - i] = (byte) ( ( value >> i ) & 1 );
}
return result;
}
/**
* Constants for {@link #TAG_FLASH} As the definition in Jeita EXIF 2.2
*/
@SuppressWarnings( "unused" )
public static interface Flash {
/** first bit */
public static enum FlashFired {
NO, YES
}
/** Values for bits 1 and 2 indicating the status of returned light */
public static enum StrobeLightDetection {
NO_DETECTION, RESERVED, LIGHT_NOT_DETECTED, LIGHT_DETECTED
}
/** Values for bits 3 and 4 indicating the camera's flash mode */
public static enum CompulsoryMode {
UNKNOWN,
FIRING,
SUPPRESSION,
AUTO
}
/** Values for bit 5 indicating the presence of a flash function. */
public static enum FlashFunction {
FUNCTION_PRESENT,
FUNCTION_NOR_PRESENT
}
/** Values for bit 6 indicating the camera's red-eye mode. */
public static enum RedEyeMode {
NONE,
SUPPORTED
}
}
/**
* Constants for {@link #TAG_COLOR_SPACE}
*/
@SuppressWarnings( "unused" )
public static interface ColorSpace {
public static final short SRGB = 1;
public static final short UNCALIBRATED = (short) 0xFFFF;
}
/**
* Constants for {@link #TAG_EXPOSURE_MODE}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
public static interface WhiteBalance {
public static final short AUTO = 0;
public static final short MANUAL = 1;
}
/**
* Constants for {@link #TAG_SCENE_CAPTURE_TYPE}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
public static interface FileSource {
public static final short DSC = 3;
}
/**
* Constants for {@link #TAG_SCENE_TYPE}
*/
@SuppressWarnings( "unused" )
public static interface SceneType {
public static final short DIRECT_PHOTOGRAPHED = 1;
}
/**
* Constants for {@link #TAG_GAIN_CONTROL}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
public static interface GpsLongitudeRef {
public static final String EAST = "E";
public static final String WEST = "W";
}
/**
* Constants for {@link #TAG_GPS_ALTITUDE_REF}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
public static interface GpsStatus {
public static final String IN_PROGRESS = "A";
public static final String INTEROPERABILITY = "V";
}
/**
* Constants for {@link #TAG_GPS_MEASURE_MODE}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
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}
*/
@SuppressWarnings( "unused" )
public static interface GpsTrackRef {
public static final String TRUE_DIRECTION = "T";
public static final String MAGNETIC_DIRECTION = "M";
}
/**
* Constants for {@link #TAG_GPS_DIFFERENTIAL}
*/
@SuppressWarnings( "unused" )
public static interface GpsDifferential {
public static final short WITHOUT_DIFFERENTIAL_CORRECTION = 0;
public static final short DIFFERENTIAL_CORRECTION_APPLIED = 1;
}
/**
* Constants for the jpeg process algorithm used.
*
* @see #getJpegProcess()
*/
@SuppressWarnings( "unused" )
public static interface JpegProcess {
public static final short BASELINE = (short) 0xFFC0;
public static final short EXTENDED_SEQUENTIAL = (short) 0xFFC1;
public static final short PROGRESSIVE = (short) 0xFFC2;
public static final short LOSSLESS = (short) 0xFFC3;
public static final short DIFFERENTIAL_SEQUENTIAL = (short) 0xFFC5;
public static final short DIFFERENTIAL_PROGRESSIVE = (short) 0xFFC6;
public static final short DIFFERENTIAL_LOSSLESS = (short) 0xFFC7;
public static final short EXTENDED_SEQ_ARITHMETIC_CODING = (short) 0xFFC9;
public static final short PROGRESSIVE_AIRTHMETIC_CODING = (short) 0xFFCA;
public static final short LOSSLESS_AITHMETIC_CODING = (short) 0xFFCB;
public static final short DIFFERENTIAL_SEQ_ARITHMETIC_CODING = (short) 0xFFCD;
public static final short DIFFERENTIAL_PROGRESSIVE_ARITHMETIC_CODING = (short) 0xFFCE;
public static final short DIFFERENTIAL_LOSSLESS_ARITHMETIC_CODING = (short) 0xFFCF;
}
/**
* Constants for the {@link #TAG_SENSITIVITY_TYPE} tag
*/
@SuppressWarnings( "unused" )
public static interface SensitivityType {
public static final short UNKNOWN = 0;
/** Standard output sensitivity */
public static final short SOS = 1;
/** Recommended exposure index */
public static final short REI = 2;
/** ISO Speed */
public static final short ISO = 3;
/** Standard output sensitivity and Recommended output index */
public static final short SOS_REI = 4;
/** Standard output sensitivity and ISO speed */
public static final short SOS_ISO = 5;
/** Recommended output index and ISO Speed */
public static final short REI_ISO = 6;
/** Standard output sensitivity and Recommended output index and ISO Speed */
public static final short SOS_REI_ISO = 7;
}
/**
* Options for calling {@link #readExif(java.io.InputStream, int)}, {@link #readExif(byte[], int)},
* {@link #readExif(String, int)}
*/
public static interface Options {
/**
* Option bit to request to parse IFD0.
*/
int OPTION_IFD_0 = 1;
/**
* Option bit to request to parse IFD1.
*/
int OPTION_IFD_1 = 1 << 1;
/**
* Option bit to request to parse Exif-IFD.
*/
int OPTION_IFD_EXIF = 1 << 2;
/**
* Option bit to request to parse GPS-IFD.
*/
int OPTION_IFD_GPS = 1 << 3;
/**
* Option bit to request to parse Interoperability-IFD.
*/
int OPTION_IFD_INTEROPERABILITY = 1 << 4;
/**
* Option bit to request to parse thumbnail.
*/
int OPTION_THUMBNAIL = 1 << 5;
/**
* Option bit to request all the options
*/
int OPTION_ALL = OPTION_IFD_0 ^ OPTION_IFD_1 ^ OPTION_IFD_EXIF ^ OPTION_IFD_GPS ^ OPTION_IFD_INTEROPERABILITY ^ OPTION_THUMBNAIL;
}
}
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