Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.gallery3d.exif; |
| 18 | |
Earl Ou | ff0f96c | 2012-10-19 16:50:34 +0800 | [diff] [blame] | 19 | import java.nio.charset.Charset; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 20 | import java.text.SimpleDateFormat; |
| 21 | import java.util.Arrays; |
| 22 | import java.util.Date; |
| 23 | |
| 24 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 25 | * This class stores information of an EXIF tag. For more information about |
| 26 | * defined EXIF tags, please read the Jeita EXIF 2.2 standard. Tags should be |
| 27 | * instantiated using {@link ExifInterface#buildTag}. |
| 28 | * |
| 29 | * @see ExifInterface |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 30 | */ |
| 31 | public class ExifTag { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 32 | /** |
| 33 | * The BYTE type in the EXIF standard. An 8-bit unsigned integer. |
| 34 | */ |
| 35 | public static final short TYPE_UNSIGNED_BYTE = 1; |
| 36 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 37 | * The ASCII type in the EXIF standard. An 8-bit byte containing one 7-bit |
| 38 | * ASCII code. The final byte is terminated with NULL. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 39 | */ |
| 40 | public static final short TYPE_ASCII = 2; |
| 41 | /** |
| 42 | * The SHORT type in the EXIF standard. A 16-bit (2-byte) unsigned integer |
| 43 | */ |
| 44 | public static final short TYPE_UNSIGNED_SHORT = 3; |
| 45 | /** |
| 46 | * The LONG type in the EXIF standard. A 32-bit (4-byte) unsigned integer |
| 47 | */ |
| 48 | public static final short TYPE_UNSIGNED_LONG = 4; |
| 49 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 50 | * The RATIONAL type of EXIF standard. It consists of two LONGs. The first |
| 51 | * one is the numerator and the second one expresses the denominator. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 52 | */ |
| 53 | public static final short TYPE_UNSIGNED_RATIONAL = 5; |
| 54 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 55 | * The UNDEFINED type in the EXIF standard. An 8-bit byte that can take any |
| 56 | * value depending on the field definition. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 57 | */ |
| 58 | public static final short TYPE_UNDEFINED = 7; |
| 59 | /** |
| 60 | * The SLONG type in the EXIF standard. A 32-bit (4-byte) signed integer |
| 61 | * (2's complement notation). |
| 62 | */ |
| 63 | public static final short TYPE_LONG = 9; |
| 64 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 65 | * The SRATIONAL type of EXIF standard. It consists of two SLONGs. The first |
| 66 | * one is the numerator and the second one is the denominator. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 67 | */ |
| 68 | public static final short TYPE_RATIONAL = 10; |
| 69 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 70 | private static Charset US_ASCII = Charset.forName("US-ASCII"); |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 71 | private static final int TYPE_TO_SIZE_MAP[] = new int[11]; |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 72 | private static final int UNSIGNED_SHORT_MAX = 65535; |
| 73 | private static final long UNSIGNED_LONG_MAX = 4294967295L; |
| 74 | private static final long LONG_MAX = Integer.MAX_VALUE; |
| 75 | private static final long LONG_MIN = Integer.MIN_VALUE; |
| 76 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 77 | static { |
| 78 | TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_BYTE] = 1; |
| 79 | TYPE_TO_SIZE_MAP[TYPE_ASCII] = 1; |
| 80 | TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_SHORT] = 2; |
| 81 | TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_LONG] = 4; |
| 82 | TYPE_TO_SIZE_MAP[TYPE_UNSIGNED_RATIONAL] = 8; |
| 83 | TYPE_TO_SIZE_MAP[TYPE_UNDEFINED] = 1; |
| 84 | TYPE_TO_SIZE_MAP[TYPE_LONG] = 4; |
| 85 | TYPE_TO_SIZE_MAP[TYPE_RATIONAL] = 8; |
| 86 | } |
| 87 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 88 | static final int SIZE_UNDEFINED = 0; |
| 89 | |
| 90 | // Exif TagId |
| 91 | private final short mTagId; |
| 92 | // Exif Tag Type |
| 93 | private final short mDataType; |
| 94 | // If tag has defined count |
| 95 | private boolean mHasDefinedDefaultComponentCount; |
| 96 | // Actual data count in tag (should be number of elements in value array) |
| 97 | private int mComponentCountActual; |
| 98 | // The ifd that this tag should be put in |
| 99 | private int mIfd; |
| 100 | // The value (array of elements of type Tag Type) |
| 101 | private Object mValue; |
| 102 | // Value offset in exif header. |
| 103 | private int mOffset; |
| 104 | |
| 105 | private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("yyyy:MM:dd kk:mm:ss"); |
| 106 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 107 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 108 | * Returns true if the given IFD is a valid IFD. |
| 109 | */ |
| 110 | public static boolean isValidIfd(int ifdId) { |
| 111 | return ifdId == IfdId.TYPE_IFD_0 || ifdId == IfdId.TYPE_IFD_1 |
| 112 | || ifdId == IfdId.TYPE_IFD_EXIF || ifdId == IfdId.TYPE_IFD_INTEROPERABILITY |
| 113 | || ifdId == IfdId.TYPE_IFD_GPS; |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Returns true if a given type is a valid tag type. |
| 118 | */ |
| 119 | public static boolean isValidType(short type) { |
| 120 | return type == TYPE_UNSIGNED_BYTE || type == TYPE_ASCII || |
| 121 | type == TYPE_UNSIGNED_SHORT || type == TYPE_UNSIGNED_LONG || |
| 122 | type == TYPE_UNSIGNED_RATIONAL || type == TYPE_UNDEFINED || |
| 123 | type == TYPE_LONG || type == TYPE_RATIONAL; |
| 124 | } |
| 125 | |
| 126 | // Use builtTag in ExifInterface instead of constructor. |
| 127 | ExifTag(short tagId, short type, int componentCount, int ifd, |
| 128 | boolean hasDefinedComponentCount) { |
| 129 | mTagId = tagId; |
| 130 | mDataType = type; |
| 131 | mComponentCountActual = componentCount; |
| 132 | mHasDefinedDefaultComponentCount = hasDefinedComponentCount; |
| 133 | mIfd = ifd; |
| 134 | mValue = null; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Gets the element size of the given data type in bytes. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 139 | * |
| 140 | * @see #TYPE_ASCII |
| 141 | * @see #TYPE_LONG |
| 142 | * @see #TYPE_RATIONAL |
| 143 | * @see #TYPE_UNDEFINED |
| 144 | * @see #TYPE_UNSIGNED_BYTE |
| 145 | * @see #TYPE_UNSIGNED_LONG |
| 146 | * @see #TYPE_UNSIGNED_RATIONAL |
| 147 | * @see #TYPE_UNSIGNED_SHORT |
| 148 | */ |
| 149 | public static int getElementSize(short type) { |
| 150 | return TYPE_TO_SIZE_MAP[type]; |
| 151 | } |
| 152 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 153 | /** |
| 154 | * Returns the ID of the IFD this tag belongs to. |
| 155 | * |
| 156 | * @see IfdId#TYPE_IFD_0 |
| 157 | * @see IfdId#TYPE_IFD_1 |
| 158 | * @see IfdId#TYPE_IFD_EXIF |
| 159 | * @see IfdId#TYPE_IFD_GPS |
| 160 | * @see IfdId#TYPE_IFD_INTEROPERABILITY |
| 161 | */ |
| 162 | public int getIfd() { |
| 163 | return mIfd; |
| 164 | } |
| 165 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 166 | protected void setIfd(int ifdId) { |
| 167 | mIfd = ifdId; |
| 168 | } |
| 169 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 170 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 171 | * Gets the TID of this tag. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 172 | */ |
| 173 | public short getTagId() { |
| 174 | return mTagId; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Gets the data type of this tag |
| 179 | * |
| 180 | * @see #TYPE_ASCII |
| 181 | * @see #TYPE_LONG |
| 182 | * @see #TYPE_RATIONAL |
| 183 | * @see #TYPE_UNDEFINED |
| 184 | * @see #TYPE_UNSIGNED_BYTE |
| 185 | * @see #TYPE_UNSIGNED_LONG |
| 186 | * @see #TYPE_UNSIGNED_RATIONAL |
| 187 | * @see #TYPE_UNSIGNED_SHORT |
| 188 | */ |
| 189 | public short getDataType() { |
| 190 | return mDataType; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Gets the total data size in bytes of the value of this tag. |
| 195 | */ |
| 196 | public int getDataSize() { |
| 197 | return getComponentCount() * getElementSize(getDataType()); |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Gets the component count of this tag. |
| 202 | */ |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 203 | |
| 204 | // TODO: fix integer overflows with this |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 205 | public int getComponentCount() { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 206 | return mComponentCountActual; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 210 | * Sets the component count of this tag. Call this function before |
| 211 | * setValue() if the length of value does not match the component count. |
Earl Ou | ff0f96c | 2012-10-19 16:50:34 +0800 | [diff] [blame] | 212 | */ |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 213 | protected void forceSetComponentCount(int count) { |
| 214 | mComponentCountActual = count; |
Earl Ou | ff0f96c | 2012-10-19 16:50:34 +0800 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 218 | * Returns true if this ExifTag contains value; otherwise, this tag will |
| 219 | * contain an offset value that is determined when the tag is written. |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 220 | */ |
| 221 | public boolean hasValue() { |
| 222 | return mValue != null; |
| 223 | } |
| 224 | |
| 225 | /** |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 226 | * Sets integer values into this tag. This method should be used for tags of |
| 227 | * type {@link #TYPE_UNSIGNED_SHORT}. This method will fail if: |
| 228 | * <ul> |
| 229 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_SHORT}, |
| 230 | * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_LONG}.</li> |
| 231 | * <li>The value overflows.</li> |
| 232 | * <li>The value.length does NOT match the component count in the definition |
| 233 | * for this tag.</li> |
| 234 | * </ul> |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 235 | */ |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 236 | public boolean setValue(int[] value) { |
| 237 | if (checkBadComponentCount(value.length)) { |
| 238 | return false; |
| 239 | } |
| 240 | if (mDataType != TYPE_UNSIGNED_SHORT && mDataType != TYPE_LONG && |
| 241 | mDataType != TYPE_UNSIGNED_LONG) { |
| 242 | return false; |
| 243 | } |
| 244 | if (mDataType == TYPE_UNSIGNED_SHORT && checkOverflowForUnsignedShort(value)) { |
| 245 | return false; |
| 246 | } else if (mDataType == TYPE_UNSIGNED_LONG && checkOverflowForUnsignedLong(value)) { |
| 247 | return false; |
| 248 | } |
| 249 | |
| 250 | long[] data = new long[value.length]; |
nicolasroard | 2e47253 | 2013-03-14 08:58:24 -0700 | [diff] [blame] | 251 | for (int i = 0; i < value.length; i++) { |
| 252 | data[i] = value[i]; |
| 253 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 254 | mValue = data; |
| 255 | mComponentCountActual = value.length; |
| 256 | return true; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Sets integer value into this tag. This method should be used for tags of |
| 261 | * type {@link #TYPE_UNSIGNED_SHORT}, or {@link #TYPE_LONG}. This method |
| 262 | * will fail if: |
| 263 | * <ul> |
| 264 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_SHORT}, |
| 265 | * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_LONG}.</li> |
| 266 | * <li>The value overflows.</li> |
| 267 | * <li>The component count in the definition of this tag is not 1.</li> |
| 268 | * </ul> |
| 269 | */ |
| 270 | public boolean setValue(int value) { |
| 271 | return setValue(new int[] { |
| 272 | value |
| 273 | }); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Sets long values into this tag. This method should be used for tags of |
| 278 | * type {@link #TYPE_UNSIGNED_LONG}. This method will fail if: |
| 279 | * <ul> |
| 280 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_LONG}.</li> |
| 281 | * <li>The value overflows.</li> |
| 282 | * <li>The value.length does NOT match the component count in the definition |
| 283 | * for this tag.</li> |
| 284 | * </ul> |
| 285 | */ |
| 286 | public boolean setValue(long[] value) { |
| 287 | if (checkBadComponentCount(value.length) || mDataType != TYPE_UNSIGNED_LONG) { |
| 288 | return false; |
| 289 | } |
| 290 | if (checkOverflowForUnsignedLong(value)) { |
| 291 | return false; |
| 292 | } |
| 293 | mValue = value; |
| 294 | mComponentCountActual = value.length; |
| 295 | return true; |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Sets long values into this tag. This method should be used for tags of |
| 300 | * type {@link #TYPE_UNSIGNED_LONG}. This method will fail if: |
| 301 | * <ul> |
| 302 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_LONG}.</li> |
| 303 | * <li>The value overflows.</li> |
| 304 | * <li>The component count in the definition for this tag is not 1.</li> |
| 305 | * </ul> |
| 306 | */ |
| 307 | public boolean setValue(long value) { |
| 308 | return setValue(new long[] { |
| 309 | value |
| 310 | }); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Sets a string value into this tag. This method should be used for tags of |
| 315 | * type {@link #TYPE_ASCII}. The string is converted to an ASCII string. |
| 316 | * Characters that cannot be converted are replaced with '?'. The length of |
| 317 | * the string must be equal to either (component count -1) or (component |
| 318 | * count). The final byte will be set to the string null terminator '\0', |
| 319 | * overwriting the last character in the string if the value.length is equal |
| 320 | * to the component count. This method will fail if: |
| 321 | * <ul> |
| 322 | * <li>The data type is not {@link #TYPE_ASCII} or {@link #TYPE_UNDEFINED}.</li> |
| 323 | * <li>The length of the string is not equal to (component count -1) or |
| 324 | * (component count) in the definition for this tag.</li> |
| 325 | * </ul> |
| 326 | */ |
| 327 | public boolean setValue(String value) { |
| 328 | if (mDataType != TYPE_ASCII && mDataType != TYPE_UNDEFINED) { |
| 329 | return false; |
| 330 | } |
| 331 | |
| 332 | byte[] buf = value.getBytes(US_ASCII); |
Ruben Brunk | 310ef8d | 2013-04-25 13:10:53 -0700 | [diff] [blame^] | 333 | byte[] finalBuf = buf; |
| 334 | if (buf.length > 0) { |
| 335 | finalBuf = (buf[buf.length - 1] == 0 || mDataType == TYPE_UNDEFINED) ? buf : Arrays |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 336 | .copyOf(buf, buf.length + 1); |
Ruben Brunk | 310ef8d | 2013-04-25 13:10:53 -0700 | [diff] [blame^] | 337 | } else if (mDataType == TYPE_ASCII && mComponentCountActual == 1) { |
| 338 | finalBuf = new byte[] { 0 }; |
| 339 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 340 | int count = finalBuf.length; |
| 341 | if (checkBadComponentCount(count)) { |
| 342 | return false; |
| 343 | } |
| 344 | mComponentCountActual = count; |
| 345 | mValue = finalBuf; |
| 346 | return true; |
| 347 | } |
| 348 | |
| 349 | /** |
| 350 | * Sets Rational values into this tag. This method should be used for tags |
| 351 | * of type {@link #TYPE_UNSIGNED_RATIONAL}, or {@link #TYPE_RATIONAL}. This |
| 352 | * method will fail if: |
| 353 | * <ul> |
| 354 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_RATIONAL} |
| 355 | * or {@link #TYPE_RATIONAL}.</li> |
| 356 | * <li>The value overflows.</li> |
| 357 | * <li>The value.length does NOT match the component count in the definition |
| 358 | * for this tag.</li> |
| 359 | * </ul> |
| 360 | * |
| 361 | * @see Rational |
| 362 | */ |
| 363 | public boolean setValue(Rational[] value) { |
| 364 | if (checkBadComponentCount(value.length)) { |
| 365 | return false; |
| 366 | } |
| 367 | if (mDataType != TYPE_UNSIGNED_RATIONAL && mDataType != TYPE_RATIONAL) { |
| 368 | return false; |
| 369 | } |
| 370 | if (mDataType == TYPE_UNSIGNED_RATIONAL && checkOverflowForUnsignedRational(value)) { |
| 371 | return false; |
| 372 | } else if (mDataType == TYPE_RATIONAL && checkOverflowForRational(value)) { |
| 373 | return false; |
| 374 | } |
| 375 | |
| 376 | mValue = value; |
| 377 | mComponentCountActual = value.length; |
| 378 | return true; |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * Sets a Rational value into this tag. This method should be used for tags |
| 383 | * of type {@link #TYPE_UNSIGNED_RATIONAL}, or {@link #TYPE_RATIONAL}. This |
| 384 | * method will fail if: |
| 385 | * <ul> |
| 386 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_RATIONAL} |
| 387 | * or {@link #TYPE_RATIONAL}.</li> |
| 388 | * <li>The value overflows.</li> |
| 389 | * <li>The component count in the definition for this tag is not 1.</li> |
| 390 | * </ul> |
| 391 | * |
| 392 | * @see Rational |
| 393 | */ |
| 394 | public boolean setValue(Rational value) { |
| 395 | return setValue(new Rational[] { |
| 396 | value |
| 397 | }); |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * Sets byte values into this tag. This method should be used for tags of |
| 402 | * type {@link #TYPE_UNSIGNED_BYTE} or {@link #TYPE_UNDEFINED}. This method |
| 403 | * will fail if: |
| 404 | * <ul> |
| 405 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_BYTE} or |
| 406 | * {@link #TYPE_UNDEFINED} .</li> |
| 407 | * <li>The length does NOT match the component count in the definition for |
| 408 | * this tag.</li> |
| 409 | * </ul> |
| 410 | */ |
| 411 | public boolean setValue(byte[] value, int offset, int length) { |
| 412 | if (checkBadComponentCount(length)) { |
| 413 | return false; |
| 414 | } |
| 415 | if (mDataType != TYPE_UNSIGNED_BYTE && mDataType != TYPE_UNDEFINED) { |
| 416 | return false; |
| 417 | } |
| 418 | mValue = new byte[length]; |
| 419 | System.arraycopy(value, offset, mValue, 0, length); |
| 420 | mComponentCountActual = length; |
| 421 | return true; |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * Equivalent to setValue(value, 0, value.length). |
| 426 | */ |
| 427 | public boolean setValue(byte[] value) { |
| 428 | return setValue(value, 0, value.length); |
| 429 | } |
| 430 | |
| 431 | /** |
| 432 | * Sets byte value into this tag. This method should be used for tags of |
| 433 | * type {@link #TYPE_UNSIGNED_BYTE} or {@link #TYPE_UNDEFINED}. This method |
| 434 | * will fail if: |
| 435 | * <ul> |
| 436 | * <li>The component type of this tag is not {@link #TYPE_UNSIGNED_BYTE} or |
| 437 | * {@link #TYPE_UNDEFINED} .</li> |
| 438 | * <li>The component count in the definition for this tag is not 1.</li> |
| 439 | * </ul> |
| 440 | */ |
| 441 | public boolean setValue(byte value) { |
| 442 | return setValue(new byte[] { |
| 443 | value |
| 444 | }); |
| 445 | } |
| 446 | |
| 447 | /** |
| 448 | * Sets the value for this tag using an appropriate setValue method for the |
| 449 | * given object. This method will fail if: |
| 450 | * <ul> |
| 451 | * <li>The corresponding setValue method for the class of the object passed |
| 452 | * in would fail.</li> |
| 453 | * <li>There is no obvious way to cast the object passed in into an EXIF tag |
| 454 | * type.</li> |
| 455 | * </ul> |
| 456 | */ |
| 457 | public boolean setValue(Object obj) { |
| 458 | if (obj == null) { |
| 459 | return false; |
| 460 | } else if (obj instanceof Short) { |
| 461 | return setValue(((Short) obj).shortValue() & 0x0ffff); |
| 462 | } else if (obj instanceof String) { |
| 463 | return setValue((String) obj); |
| 464 | } else if (obj instanceof int[]) { |
| 465 | return setValue((int[]) obj); |
| 466 | } else if (obj instanceof long[]) { |
| 467 | return setValue((long[]) obj); |
| 468 | } else if (obj instanceof Rational) { |
| 469 | return setValue((Rational) obj); |
| 470 | } else if (obj instanceof Rational[]) { |
| 471 | return setValue((Rational[]) obj); |
| 472 | } else if (obj instanceof byte[]) { |
| 473 | return setValue((byte[]) obj); |
| 474 | } else if (obj instanceof Integer) { |
| 475 | return setValue(((Integer) obj).intValue()); |
| 476 | } else if (obj instanceof Long) { |
| 477 | return setValue(((Long) obj).longValue()); |
| 478 | } else if (obj instanceof Byte) { |
| 479 | return setValue(((Byte) obj).byteValue()); |
| 480 | } else if (obj instanceof Short[]) { |
| 481 | // Nulls in this array are treated as zeroes. |
| 482 | Short[] arr = (Short[]) obj; |
| 483 | int[] fin = new int[arr.length]; |
| 484 | for (int i = 0; i < arr.length; i++) { |
| 485 | fin[i] = (arr[i] == null) ? 0 : arr[i].shortValue() & 0x0ffff; |
| 486 | } |
| 487 | return setValue(fin); |
| 488 | } else if (obj instanceof Integer[]) { |
| 489 | // Nulls in this array are treated as zeroes. |
| 490 | Integer[] arr = (Integer[]) obj; |
| 491 | int[] fin = new int[arr.length]; |
| 492 | for (int i = 0; i < arr.length; i++) { |
| 493 | fin[i] = (arr[i] == null) ? 0 : arr[i].intValue(); |
| 494 | } |
| 495 | return setValue(fin); |
| 496 | } else if (obj instanceof Long[]) { |
| 497 | // Nulls in this array are treated as zeroes. |
| 498 | Long[] arr = (Long[]) obj; |
| 499 | long[] fin = new long[arr.length]; |
| 500 | for (int i = 0; i < arr.length; i++) { |
| 501 | fin[i] = (arr[i] == null) ? 0 : arr[i].longValue(); |
| 502 | } |
| 503 | return setValue(fin); |
| 504 | } else if (obj instanceof Byte[]) { |
| 505 | // Nulls in this array are treated as zeroes. |
| 506 | Byte[] arr = (Byte[]) obj; |
| 507 | byte[] fin = new byte[arr.length]; |
| 508 | for (int i = 0; i < arr.length; i++) { |
| 509 | fin[i] = (arr[i] == null) ? 0 : arr[i].byteValue(); |
| 510 | } |
| 511 | return setValue(fin); |
| 512 | } else { |
| 513 | return false; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | /** |
| 518 | * Sets a timestamp to this tag. The method converts the timestamp with the |
| 519 | * format of "yyyy:MM:dd kk:mm:ss" and calls {@link #setValue(String)}. This |
| 520 | * method will fail if the data type is not {@link #TYPE_ASCII} or the |
| 521 | * component count of this tag is not 20 or undefined. |
| 522 | * |
| 523 | * @param time the number of milliseconds since Jan. 1, 1970 GMT |
| 524 | * @return true on success |
| 525 | */ |
| 526 | public boolean setTimeValue(long time) { |
| 527 | // synchronized on TIME_FORMAT as SimpleDateFormat is not thread safe |
| 528 | synchronized (TIME_FORMAT) { |
| 529 | return setValue(TIME_FORMAT.format(new Date(time))); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * Gets the value as a String. This method should be used for tags of type |
| 535 | * {@link #TYPE_ASCII}. |
| 536 | * |
| 537 | * @return the value as a String, or null if the tag's value does not exist |
| 538 | * or cannot be converted to a String. |
| 539 | */ |
| 540 | public String getValueAsString() { |
| 541 | if (mValue == null) { |
| 542 | return null; |
| 543 | } else if (mValue instanceof String) { |
| 544 | return (String) mValue; |
| 545 | } else if (mValue instanceof byte[]) { |
| 546 | return new String((byte[]) mValue, US_ASCII); |
| 547 | } |
| 548 | return null; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * Gets the value as a String. This method should be used for tags of type |
| 553 | * {@link #TYPE_ASCII}. |
| 554 | * |
| 555 | * @param defaultValue the String to return if the tag's value does not |
| 556 | * exist or cannot be converted to a String. |
| 557 | * @return the tag's value as a String, or the defaultValue. |
| 558 | */ |
| 559 | public String getValueAsString(String defaultValue) { |
| 560 | String s = getValueAsString(); |
| 561 | if (s == null) { |
| 562 | return defaultValue; |
| 563 | } |
| 564 | return s; |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | * Gets the value as a byte array. This method should be used for tags of |
| 569 | * type {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}. |
| 570 | * |
| 571 | * @return the value as a byte array, or null if the tag's value does not |
| 572 | * exist or cannot be converted to a byte array. |
| 573 | */ |
| 574 | public byte[] getValueAsBytes() { |
| 575 | if (mValue instanceof byte[]) { |
| 576 | return (byte[]) mValue; |
| 577 | } |
| 578 | return null; |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * Gets the value as a byte. If there are more than 1 bytes in this value, |
| 583 | * gets the first byte. This method should be used for tags of type |
| 584 | * {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}. |
| 585 | * |
| 586 | * @param defaultValue the byte to return if tag's value does not exist or |
| 587 | * cannot be converted to a byte. |
| 588 | * @return the tag's value as a byte, or the defaultValue. |
| 589 | */ |
| 590 | public byte getValueAsByte(byte defaultValue) { |
| 591 | byte[] b = getValueAsBytes(); |
| 592 | if (b == null || b.length < 1) { |
| 593 | return defaultValue; |
| 594 | } |
| 595 | return b[0]; |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * Gets the value as an array of Rationals. This method should be used for |
| 600 | * tags of type {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}. |
| 601 | * |
| 602 | * @return the value as as an array of Rationals, or null if the tag's value |
| 603 | * does not exist or cannot be converted to an array of Rationals. |
| 604 | */ |
| 605 | public Rational[] getValueAsRationals() { |
| 606 | if (mValue instanceof Rational[]) { |
| 607 | return (Rational[]) mValue; |
| 608 | } |
| 609 | return null; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * Gets the value as a Rational. If there are more than 1 Rationals in this |
| 614 | * value, gets the first one. This method should be used for tags of type |
| 615 | * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}. |
| 616 | * |
| 617 | * @param defaultValue the Rational to return if tag's value does not exist |
| 618 | * or cannot be converted to a Rational. |
| 619 | * @return the tag's value as a Rational, or the defaultValue. |
| 620 | */ |
| 621 | public Rational getValueAsRational(Rational defaultValue) { |
| 622 | Rational[] r = getValueAsRationals(); |
| 623 | if (r == null || r.length < 1) { |
| 624 | return defaultValue; |
| 625 | } |
| 626 | return r[0]; |
| 627 | } |
| 628 | |
| 629 | /** |
| 630 | * Gets the value as a Rational. If there are more than 1 Rationals in this |
| 631 | * value, gets the first one. This method should be used for tags of type |
| 632 | * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}. |
| 633 | * |
| 634 | * @param defaultValue the numerator of the Rational to return if tag's |
| 635 | * value does not exist or cannot be converted to a Rational (the |
| 636 | * denominator will be 1). |
| 637 | * @return the tag's value as a Rational, or the defaultValue. |
| 638 | */ |
| 639 | public Rational getValueAsRational(long defaultValue) { |
| 640 | Rational defaultVal = new Rational(defaultValue, 1); |
| 641 | return getValueAsRational(defaultVal); |
| 642 | } |
| 643 | |
| 644 | /** |
| 645 | * Gets the value as an array of ints. This method should be used for tags |
| 646 | * of type {@link #TYPE_UNSIGNED_SHORT}, {@link #TYPE_UNSIGNED_LONG}. |
| 647 | * |
| 648 | * @return the value as as an array of ints, or null if the tag's value does |
| 649 | * not exist or cannot be converted to an array of ints. |
| 650 | */ |
| 651 | public int[] getValueAsInts() { |
| 652 | if (mValue == null) { |
| 653 | return null; |
| 654 | } else if (mValue instanceof long[]) { |
| 655 | long[] val = (long[]) mValue; |
| 656 | int[] arr = new int[val.length]; |
| 657 | for (int i = 0; i < val.length; i++) { |
| 658 | arr[i] = (int) val[i]; // Truncates |
| 659 | } |
| 660 | return arr; |
| 661 | } |
| 662 | return null; |
| 663 | } |
| 664 | |
| 665 | /** |
| 666 | * Gets the value as an int. If there are more than 1 ints in this value, |
| 667 | * gets the first one. This method should be used for tags of type |
| 668 | * {@link #TYPE_UNSIGNED_SHORT}, {@link #TYPE_UNSIGNED_LONG}. |
| 669 | * |
| 670 | * @param defaultValue the int to return if tag's value does not exist or |
| 671 | * cannot be converted to an int. |
| 672 | * @return the tag's value as a int, or the defaultValue. |
| 673 | */ |
| 674 | public int getValueAsInt(int defaultValue) { |
| 675 | int[] i = getValueAsInts(); |
| 676 | if (i == null || i.length < 1) { |
| 677 | return defaultValue; |
| 678 | } |
| 679 | return i[0]; |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * Gets the value as an array of longs. This method should be used for tags |
| 684 | * of type {@link #TYPE_UNSIGNED_LONG}. |
| 685 | * |
| 686 | * @return the value as as an array of longs, or null if the tag's value |
| 687 | * does not exist or cannot be converted to an array of longs. |
| 688 | */ |
| 689 | public long[] getValueAsLongs() { |
| 690 | if (mValue instanceof long[]) { |
| 691 | return (long[]) mValue; |
| 692 | } |
| 693 | return null; |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * Gets the value or null if none exists. If there are more than 1 longs in |
| 698 | * this value, gets the first one. This method should be used for tags of |
| 699 | * type {@link #TYPE_UNSIGNED_LONG}. |
| 700 | * |
| 701 | * @param defaultValue the long to return if tag's value does not exist or |
| 702 | * cannot be converted to a long. |
| 703 | * @return the tag's value as a long, or the defaultValue. |
| 704 | */ |
| 705 | public long getValueAsLong(long defaultValue) { |
| 706 | long[] l = getValueAsLongs(); |
| 707 | if (l == null || l.length < 1) { |
| 708 | return defaultValue; |
| 709 | } |
| 710 | return l[0]; |
| 711 | } |
| 712 | |
| 713 | /** |
| 714 | * Gets the tag's value or null if none exists. |
| 715 | */ |
| 716 | public Object getValue() { |
| 717 | return mValue; |
| 718 | } |
| 719 | |
| 720 | /** |
| 721 | * Gets a long representation of the value. |
| 722 | * |
| 723 | * @param defaultValue value to return if there is no value or value is a |
| 724 | * rational with a denominator of 0. |
| 725 | * @return the tag's value as a long, or defaultValue if no representation |
| 726 | * exists. |
| 727 | */ |
| 728 | public long forceGetValueAsLong(long defaultValue) { |
| 729 | long[] l = getValueAsLongs(); |
| 730 | if (l != null && l.length >= 1) { |
| 731 | return l[0]; |
| 732 | } |
| 733 | byte[] b = getValueAsBytes(); |
| 734 | if (b != null && b.length >= 1) { |
| 735 | return b[0]; |
| 736 | } |
| 737 | Rational[] r = getValueAsRationals(); |
| 738 | if (r != null && r.length >= 1 && r[0].getDenominator() != 0) { |
| 739 | return (long) r[0].toDouble(); |
| 740 | } |
| 741 | return defaultValue; |
| 742 | } |
| 743 | |
| 744 | /** |
| 745 | * Gets a string representation of the value. |
| 746 | */ |
| 747 | public String forceGetValueAsString() { |
| 748 | if (mValue == null) { |
| 749 | return ""; |
| 750 | } else if (mValue instanceof byte[]) { |
| 751 | if (mDataType == TYPE_ASCII) { |
| 752 | return new String((byte[]) mValue, US_ASCII); |
| 753 | } else { |
| 754 | return Arrays.toString((byte[]) mValue); |
| 755 | } |
| 756 | } else if (mValue instanceof long[]) { |
| 757 | if (((long[]) mValue).length == 1) { |
| 758 | return String.valueOf(((long[]) mValue)[0]); |
| 759 | } else { |
| 760 | return Arrays.toString((long[]) mValue); |
| 761 | } |
| 762 | } else if (mValue instanceof Object[]) { |
| 763 | if (((Object[]) mValue).length == 1) { |
| 764 | Object val = ((Object[]) mValue)[0]; |
| 765 | if (val == null) { |
| 766 | return ""; |
| 767 | } else { |
| 768 | return val.toString(); |
| 769 | } |
| 770 | } else { |
| 771 | return Arrays.toString((Object[]) mValue); |
| 772 | } |
| 773 | } else { |
| 774 | return mValue.toString(); |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | /** |
| 779 | * Gets the value for type {@link #TYPE_ASCII}, {@link #TYPE_LONG}, |
| 780 | * {@link #TYPE_UNDEFINED}, {@link #TYPE_UNSIGNED_BYTE}, |
| 781 | * {@link #TYPE_UNSIGNED_LONG}, or {@link #TYPE_UNSIGNED_SHORT}. For |
| 782 | * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}, call |
| 783 | * {@link #getRational(int)} instead. |
| 784 | * |
| 785 | * @exception IllegalArgumentException if the data type is |
| 786 | * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}. |
| 787 | */ |
| 788 | protected long getValueAt(int index) { |
| 789 | if (mValue instanceof long[]) { |
| 790 | return ((long[]) mValue)[index]; |
| 791 | } else if (mValue instanceof byte[]) { |
| 792 | return ((byte[]) mValue)[index]; |
| 793 | } |
| 794 | throw new IllegalArgumentException("Cannot get integer value from " |
| 795 | + convertTypeToString(mDataType)); |
| 796 | } |
| 797 | |
| 798 | /** |
| 799 | * Gets the {@link #TYPE_ASCII} data. |
| 800 | * |
| 801 | * @exception IllegalArgumentException If the type is NOT |
| 802 | * {@link #TYPE_ASCII}. |
| 803 | */ |
| 804 | protected String getString() { |
| 805 | if (mDataType != TYPE_ASCII) { |
| 806 | throw new IllegalArgumentException("Cannot get ASCII value from " |
| 807 | + convertTypeToString(mDataType)); |
| 808 | } |
| 809 | return new String((byte[]) mValue, US_ASCII); |
| 810 | } |
| 811 | |
| 812 | /* |
| 813 | * Get the converted ascii byte. Used by ExifOutputStream. |
| 814 | */ |
| 815 | protected byte[] getStringByte() { |
| 816 | return (byte[]) mValue; |
| 817 | } |
| 818 | |
| 819 | /** |
| 820 | * Gets the {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL} data. |
| 821 | * |
| 822 | * @exception IllegalArgumentException If the type is NOT |
| 823 | * {@link #TYPE_RATIONAL} or {@link #TYPE_UNSIGNED_RATIONAL}. |
| 824 | */ |
| 825 | protected Rational getRational(int index) { |
| 826 | if ((mDataType != TYPE_RATIONAL) && (mDataType != TYPE_UNSIGNED_RATIONAL)) { |
| 827 | throw new IllegalArgumentException("Cannot get RATIONAL value from " |
| 828 | + convertTypeToString(mDataType)); |
| 829 | } |
| 830 | return ((Rational[]) mValue)[index]; |
| 831 | } |
| 832 | |
| 833 | /** |
| 834 | * Equivalent to getBytes(buffer, 0, buffer.length). |
| 835 | */ |
| 836 | protected void getBytes(byte[] buf) { |
| 837 | getBytes(buf, 0, buf.length); |
| 838 | } |
| 839 | |
| 840 | /** |
| 841 | * Gets the {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE} data. |
| 842 | * |
| 843 | * @param buf the byte array in which to store the bytes read. |
| 844 | * @param offset the initial position in buffer to store the bytes. |
| 845 | * @param length the maximum number of bytes to store in buffer. If length > |
| 846 | * component count, only the valid bytes will be stored. |
| 847 | * @exception IllegalArgumentException If the type is NOT |
| 848 | * {@link #TYPE_UNDEFINED} or {@link #TYPE_UNSIGNED_BYTE}. |
| 849 | */ |
| 850 | protected void getBytes(byte[] buf, int offset, int length) { |
| 851 | if ((mDataType != TYPE_UNDEFINED) && (mDataType != TYPE_UNSIGNED_BYTE)) { |
| 852 | throw new IllegalArgumentException("Cannot get BYTE value from " |
| 853 | + convertTypeToString(mDataType)); |
| 854 | } |
| 855 | System.arraycopy(mValue, 0, buf, offset, |
| 856 | (length > mComponentCountActual) ? mComponentCountActual : length); |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * Gets the offset of this tag. This is only valid if this data size > 4 and |
| 861 | * contains an offset to the location of the actual value. |
| 862 | */ |
| 863 | protected int getOffset() { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 864 | return mOffset; |
| 865 | } |
| 866 | |
| 867 | /** |
| 868 | * Sets the offset of this tag. |
| 869 | */ |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 870 | protected void setOffset(int offset) { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 871 | mOffset = offset; |
| 872 | } |
| 873 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 874 | protected void setHasDefinedCount(boolean d) { |
| 875 | mHasDefinedDefaultComponentCount = d; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 876 | } |
| 877 | |
Ruben Brunk | 310ef8d | 2013-04-25 13:10:53 -0700 | [diff] [blame^] | 878 | protected boolean hasDefinedCount() { |
| 879 | return mHasDefinedDefaultComponentCount; |
| 880 | } |
| 881 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 882 | private boolean checkBadComponentCount(int count) { |
| 883 | if (mHasDefinedDefaultComponentCount && (mComponentCountActual != count)) { |
| 884 | return true; |
| 885 | } |
| 886 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | private static String convertTypeToString(short type) { |
| 890 | switch (type) { |
| 891 | case TYPE_UNSIGNED_BYTE: |
| 892 | return "UNSIGNED_BYTE"; |
| 893 | case TYPE_ASCII: |
| 894 | return "ASCII"; |
| 895 | case TYPE_UNSIGNED_SHORT: |
| 896 | return "UNSIGNED_SHORT"; |
| 897 | case TYPE_UNSIGNED_LONG: |
| 898 | return "UNSIGNED_LONG"; |
| 899 | case TYPE_UNSIGNED_RATIONAL: |
| 900 | return "UNSIGNED_RATIONAL"; |
| 901 | case TYPE_UNDEFINED: |
| 902 | return "UNDEFINED"; |
| 903 | case TYPE_LONG: |
| 904 | return "LONG"; |
| 905 | case TYPE_RATIONAL: |
| 906 | return "RATIONAL"; |
| 907 | default: |
| 908 | return ""; |
| 909 | } |
| 910 | } |
| 911 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 912 | private boolean checkOverflowForUnsignedShort(int[] value) { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 913 | for (int v : value) { |
| 914 | if (v > UNSIGNED_SHORT_MAX || v < 0) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 915 | return true; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 916 | } |
| 917 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 918 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 919 | } |
| 920 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 921 | private boolean checkOverflowForUnsignedLong(long[] value) { |
| 922 | for (long v : value) { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 923 | if (v < 0 || v > UNSIGNED_LONG_MAX) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 924 | return true; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 925 | } |
| 926 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 927 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 928 | } |
| 929 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 930 | private boolean checkOverflowForUnsignedLong(int[] value) { |
| 931 | for (int v : value) { |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 932 | if (v < 0) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 933 | return true; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 934 | } |
| 935 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 936 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 937 | } |
| 938 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 939 | private boolean checkOverflowForUnsignedRational(Rational[] value) { |
| 940 | for (Rational v : value) { |
| 941 | if (v.getNumerator() < 0 || v.getDenominator() < 0 |
| 942 | || v.getNumerator() > UNSIGNED_LONG_MAX |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 943 | || v.getDenominator() > UNSIGNED_LONG_MAX) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 944 | return true; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 945 | } |
| 946 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 947 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 948 | } |
| 949 | |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 950 | private boolean checkOverflowForRational(Rational[] value) { |
| 951 | for (Rational v : value) { |
| 952 | if (v.getNumerator() < LONG_MIN || v.getDenominator() < LONG_MIN |
| 953 | || v.getNumerator() > LONG_MAX |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 954 | || v.getDenominator() > LONG_MAX) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 955 | return true; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 956 | } |
| 957 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 958 | return false; |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 959 | } |
| 960 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 961 | @Override |
| 962 | public boolean equals(Object obj) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 963 | if (obj == null) { |
| 964 | return false; |
| 965 | } |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 966 | if (obj instanceof ExifTag) { |
| 967 | ExifTag tag = (ExifTag) obj; |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 968 | if (tag.mTagId != this.mTagId |
| 969 | || tag.mComponentCountActual != this.mComponentCountActual |
| 970 | || tag.mDataType != this.mDataType) { |
| 971 | return false; |
| 972 | } |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 973 | if (mValue != null) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 974 | if (tag.mValue == null) { |
| 975 | return false; |
| 976 | } else if (mValue instanceof long[]) { |
| 977 | if (!(tag.mValue instanceof long[])) { |
| 978 | return false; |
| 979 | } |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 980 | return Arrays.equals((long[]) mValue, (long[]) tag.mValue); |
| 981 | } else if (mValue instanceof Rational[]) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 982 | if (!(tag.mValue instanceof Rational[])) { |
| 983 | return false; |
| 984 | } |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 985 | return Arrays.equals((Rational[]) mValue, (Rational[]) tag.mValue); |
| 986 | } else if (mValue instanceof byte[]) { |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 987 | if (!(tag.mValue instanceof byte[])) { |
| 988 | return false; |
| 989 | } |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 990 | return Arrays.equals((byte[]) mValue, (byte[]) tag.mValue); |
| 991 | } else { |
| 992 | return mValue.equals(tag.mValue); |
| 993 | } |
| 994 | } else { |
| 995 | return tag.mValue == null; |
| 996 | } |
| 997 | } |
| 998 | return false; |
| 999 | } |
Ruben Brunk | c274ded | 2013-03-11 19:00:12 -0700 | [diff] [blame] | 1000 | |
| 1001 | @Override |
| 1002 | public String toString() { |
| 1003 | return String.format("tag id: %04X\n", mTagId) + "ifd id: " + mIfd + "\ntype: " |
| 1004 | + convertTypeToString(mDataType) + "\ncount: " + mComponentCountActual |
| 1005 | + "\noffset: " + mOffset + "\nvalue: " + forceGetValueAsString() + "\n"; |
| 1006 | } |
| 1007 | |
Hung-ying Tyan | 2523f43 | 2012-10-19 20:50:50 +0800 | [diff] [blame] | 1008 | } |