nextcloud /
server
@@ -47,688 +47,688 @@ discard block |
||
| 47 | 47 | */ |
| 48 | 48 | class OC_Image implements \OCP\IImage { |
| 49 | 49 | |
| 50 | - // Default memory limit for images to load (128 MBytes). |
|
| 51 | - protected const DEFAULT_MEMORY_LIMIT = 128; |
|
| 52 | - |
|
| 53 | - /** @var false|resource|\GdImage */ |
|
| 54 | - protected $resource = false; // tmp resource. |
|
| 55 | - /** @var int */ |
|
| 56 | - protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident. |
|
| 57 | - /** @var string */ |
|
| 58 | - protected $mimeType = 'image/png'; // Default to png |
|
| 59 | - /** @var int */ |
|
| 60 | - protected $bitDepth = 24; |
|
| 61 | - /** @var null|string */ |
|
| 62 | - protected $filePath = null; |
|
| 63 | - /** @var finfo */ |
|
| 64 | - private $fileInfo; |
|
| 65 | - /** @var \OCP\ILogger */ |
|
| 66 | - private $logger; |
|
| 67 | - /** @var \OCP\IConfig */ |
|
| 68 | - private $config; |
|
| 69 | - /** @var array */ |
|
| 70 | - private $exif; |
|
| 71 | - |
|
| 72 | - /** |
|
| 73 | - * Constructor. |
|
| 74 | - * |
|
| 75 | - * @param resource|string|\GdImage $imageRef The path to a local file, a base64 encoded string or a resource created by |
|
| 76 | - * an imagecreate* function. |
|
| 77 | - * @param \OCP\ILogger $logger |
|
| 78 | - * @param \OCP\IConfig $config |
|
| 79 | - * @throws \InvalidArgumentException in case the $imageRef parameter is not null |
|
| 80 | - */ |
|
| 81 | - public function __construct($imageRef = null, \OCP\ILogger $logger = null, \OCP\IConfig $config = null) { |
|
| 82 | - $this->logger = $logger; |
|
| 83 | - if ($logger === null) { |
|
| 84 | - $this->logger = \OC::$server->getLogger(); |
|
| 85 | - } |
|
| 86 | - $this->config = $config; |
|
| 87 | - if ($config === null) { |
|
| 88 | - $this->config = \OC::$server->getConfig(); |
|
| 89 | - } |
|
| 90 | - |
|
| 91 | - if (\OC_Util::fileInfoLoaded()) { |
|
| 92 | - $this->fileInfo = new finfo(FILEINFO_MIME_TYPE); |
|
| 93 | - } |
|
| 94 | - |
|
| 95 | - if ($imageRef !== null) { |
|
| 96 | - throw new \InvalidArgumentException('The first parameter in the constructor is not supported anymore. Please use any of the load* methods of the image object to load an image.'); |
|
| 97 | - } |
|
| 98 | - } |
|
| 99 | - |
|
| 100 | - /** |
|
| 101 | - * Determine whether the object contains an image resource. |
|
| 102 | - * |
|
| 103 | - * @return bool |
|
| 104 | - */ |
|
| 105 | - public function valid() { |
|
| 106 | - if ((is_resource($this->resource) && get_resource_type($this->resource) === 'gd') || |
|
| 107 | - (is_object($this->resource) && get_class($this->resource) === \GdImage::class)) { |
|
| 108 | - return true; |
|
| 109 | - } |
|
| 110 | - |
|
| 111 | - return false; |
|
| 112 | - } |
|
| 113 | - |
|
| 114 | - /** |
|
| 115 | - * Returns the MIME type of the image or an empty string if no image is loaded. |
|
| 116 | - * |
|
| 117 | - * @return string |
|
| 118 | - */ |
|
| 119 | - public function mimeType() { |
|
| 120 | - return $this->valid() ? $this->mimeType : ''; |
|
| 121 | - } |
|
| 122 | - |
|
| 123 | - /** |
|
| 124 | - * Returns the width of the image or -1 if no image is loaded. |
|
| 125 | - * |
|
| 126 | - * @return int |
|
| 127 | - */ |
|
| 128 | - public function width() { |
|
| 129 | - if ($this->valid()) { |
|
| 130 | - $width = imagesx($this->resource); |
|
| 131 | - if ($width !== false) { |
|
| 132 | - return $width; |
|
| 133 | - } |
|
| 134 | - } |
|
| 135 | - return -1; |
|
| 136 | - } |
|
| 137 | - |
|
| 138 | - /** |
|
| 139 | - * Returns the height of the image or -1 if no image is loaded. |
|
| 140 | - * |
|
| 141 | - * @return int |
|
| 142 | - */ |
|
| 143 | - public function height() { |
|
| 144 | - if ($this->valid()) { |
|
| 145 | - $height = imagesy($this->resource); |
|
| 146 | - if ($height !== false) { |
|
| 147 | - return $height; |
|
| 148 | - } |
|
| 149 | - } |
|
| 150 | - return -1; |
|
| 151 | - } |
|
| 152 | - |
|
| 153 | - /** |
|
| 154 | - * Returns the width when the image orientation is top-left. |
|
| 155 | - * |
|
| 156 | - * @return int |
|
| 157 | - */ |
|
| 158 | - public function widthTopLeft() { |
|
| 159 | - $o = $this->getOrientation(); |
|
| 160 | - $this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, ['app' => 'core']); |
|
| 161 | - switch ($o) { |
|
| 162 | - case -1: |
|
| 163 | - case 1: |
|
| 164 | - case 2: // Not tested |
|
| 165 | - case 3: |
|
| 166 | - case 4: // Not tested |
|
| 167 | - return $this->width(); |
|
| 168 | - case 5: // Not tested |
|
| 169 | - case 6: |
|
| 170 | - case 7: // Not tested |
|
| 171 | - case 8: |
|
| 172 | - return $this->height(); |
|
| 173 | - } |
|
| 174 | - return $this->width(); |
|
| 175 | - } |
|
| 176 | - |
|
| 177 | - /** |
|
| 178 | - * Returns the height when the image orientation is top-left. |
|
| 179 | - * |
|
| 180 | - * @return int |
|
| 181 | - */ |
|
| 182 | - public function heightTopLeft() { |
|
| 183 | - $o = $this->getOrientation(); |
|
| 184 | - $this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, ['app' => 'core']); |
|
| 185 | - switch ($o) { |
|
| 186 | - case -1: |
|
| 187 | - case 1: |
|
| 188 | - case 2: // Not tested |
|
| 189 | - case 3: |
|
| 190 | - case 4: // Not tested |
|
| 191 | - return $this->height(); |
|
| 192 | - case 5: // Not tested |
|
| 193 | - case 6: |
|
| 194 | - case 7: // Not tested |
|
| 195 | - case 8: |
|
| 196 | - return $this->width(); |
|
| 197 | - } |
|
| 198 | - return $this->height(); |
|
| 199 | - } |
|
| 200 | - |
|
| 201 | - /** |
|
| 202 | - * Outputs the image. |
|
| 203 | - * |
|
| 204 | - * @param string $mimeType |
|
| 205 | - * @return bool |
|
| 206 | - */ |
|
| 207 | - public function show($mimeType = null) { |
|
| 208 | - if ($mimeType === null) { |
|
| 209 | - $mimeType = $this->mimeType(); |
|
| 210 | - } |
|
| 211 | - header('Content-Type: ' . $mimeType); |
|
| 212 | - return $this->_output(null, $mimeType); |
|
| 213 | - } |
|
| 214 | - |
|
| 215 | - /** |
|
| 216 | - * Saves the image. |
|
| 217 | - * |
|
| 218 | - * @param string $filePath |
|
| 219 | - * @param string $mimeType |
|
| 220 | - * @return bool |
|
| 221 | - */ |
|
| 222 | - |
|
| 223 | - public function save($filePath = null, $mimeType = null) { |
|
| 224 | - if ($mimeType === null) { |
|
| 225 | - $mimeType = $this->mimeType(); |
|
| 226 | - } |
|
| 227 | - if ($filePath === null) { |
|
| 228 | - if ($this->filePath === null) { |
|
| 229 | - $this->logger->error(__METHOD__ . '(): called with no path.', ['app' => 'core']); |
|
| 230 | - return false; |
|
| 231 | - } else { |
|
| 232 | - $filePath = $this->filePath; |
|
| 233 | - } |
|
| 234 | - } |
|
| 235 | - return $this->_output($filePath, $mimeType); |
|
| 236 | - } |
|
| 237 | - |
|
| 238 | - /** |
|
| 239 | - * Outputs/saves the image. |
|
| 240 | - * |
|
| 241 | - * @param string $filePath |
|
| 242 | - * @param string $mimeType |
|
| 243 | - * @return bool |
|
| 244 | - * @throws Exception |
|
| 245 | - */ |
|
| 246 | - private function _output($filePath = null, $mimeType = null) { |
|
| 247 | - if ($filePath) { |
|
| 248 | - if (!file_exists(dirname($filePath))) { |
|
| 249 | - mkdir(dirname($filePath), 0777, true); |
|
| 250 | - } |
|
| 251 | - $isWritable = is_writable(dirname($filePath)); |
|
| 252 | - if (!$isWritable) { |
|
| 253 | - $this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', ['app' => 'core']); |
|
| 254 | - return false; |
|
| 255 | - } elseif ($isWritable && file_exists($filePath) && !is_writable($filePath)) { |
|
| 256 | - $this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', ['app' => 'core']); |
|
| 257 | - return false; |
|
| 258 | - } |
|
| 259 | - } |
|
| 260 | - if (!$this->valid()) { |
|
| 261 | - return false; |
|
| 262 | - } |
|
| 263 | - |
|
| 264 | - $imageType = $this->imageType; |
|
| 265 | - if ($mimeType !== null) { |
|
| 266 | - switch ($mimeType) { |
|
| 267 | - case 'image/gif': |
|
| 268 | - $imageType = IMAGETYPE_GIF; |
|
| 269 | - break; |
|
| 270 | - case 'image/jpeg': |
|
| 271 | - $imageType = IMAGETYPE_JPEG; |
|
| 272 | - break; |
|
| 273 | - case 'image/png': |
|
| 274 | - $imageType = IMAGETYPE_PNG; |
|
| 275 | - break; |
|
| 276 | - case 'image/x-xbitmap': |
|
| 277 | - $imageType = IMAGETYPE_XBM; |
|
| 278 | - break; |
|
| 279 | - case 'image/bmp': |
|
| 280 | - case 'image/x-ms-bmp': |
|
| 281 | - $imageType = IMAGETYPE_BMP; |
|
| 282 | - break; |
|
| 283 | - default: |
|
| 284 | - throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format'); |
|
| 285 | - } |
|
| 286 | - } |
|
| 287 | - |
|
| 288 | - switch ($imageType) { |
|
| 289 | - case IMAGETYPE_GIF: |
|
| 290 | - $retVal = imagegif($this->resource, $filePath); |
|
| 291 | - break; |
|
| 292 | - case IMAGETYPE_JPEG: |
|
| 293 | - /** @psalm-suppress InvalidScalarArgument */ |
|
| 294 | - imageinterlace($this->resource, (PHP_VERSION_ID >= 80000 ? true : 1)); |
|
| 295 | - $retVal = imagejpeg($this->resource, $filePath, $this->getJpegQuality()); |
|
| 296 | - break; |
|
| 297 | - case IMAGETYPE_PNG: |
|
| 298 | - $retVal = imagepng($this->resource, $filePath); |
|
| 299 | - break; |
|
| 300 | - case IMAGETYPE_XBM: |
|
| 301 | - if (function_exists('imagexbm')) { |
|
| 302 | - $retVal = imagexbm($this->resource, $filePath); |
|
| 303 | - } else { |
|
| 304 | - throw new Exception('\OC_Image::_output(): imagexbm() is not supported.'); |
|
| 305 | - } |
|
| 306 | - |
|
| 307 | - break; |
|
| 308 | - case IMAGETYPE_WBMP: |
|
| 309 | - $retVal = imagewbmp($this->resource, $filePath); |
|
| 310 | - break; |
|
| 311 | - case IMAGETYPE_BMP: |
|
| 312 | - $retVal = imagebmp($this->resource, $filePath, $this->bitDepth); |
|
| 313 | - break; |
|
| 314 | - default: |
|
| 315 | - $retVal = imagepng($this->resource, $filePath); |
|
| 316 | - } |
|
| 317 | - return $retVal; |
|
| 318 | - } |
|
| 319 | - |
|
| 320 | - /** |
|
| 321 | - * Prints the image when called as $image(). |
|
| 322 | - */ |
|
| 323 | - public function __invoke() { |
|
| 324 | - return $this->show(); |
|
| 325 | - } |
|
| 326 | - |
|
| 327 | - /** |
|
| 328 | - * @param resource|\GdImage $resource |
|
| 329 | - * @throws \InvalidArgumentException in case the supplied resource does not have the type "gd" |
|
| 330 | - */ |
|
| 331 | - public function setResource($resource) { |
|
| 332 | - // For PHP<8 |
|
| 333 | - if (is_resource($resource) && get_resource_type($resource) === 'gd') { |
|
| 334 | - $this->resource = $resource; |
|
| 335 | - return; |
|
| 336 | - } |
|
| 337 | - // PHP 8 has real objects for GD stuff |
|
| 338 | - if (is_object($resource) && get_class($resource) === \GdImage::class) { |
|
| 339 | - $this->resource = $resource; |
|
| 340 | - return; |
|
| 341 | - } |
|
| 342 | - throw new \InvalidArgumentException('Supplied resource is not of type "gd".'); |
|
| 343 | - } |
|
| 344 | - |
|
| 345 | - /** |
|
| 346 | - * @return false|resource|\GdImage Returns the image resource if any |
|
| 347 | - */ |
|
| 348 | - public function resource() { |
|
| 349 | - return $this->resource; |
|
| 350 | - } |
|
| 351 | - |
|
| 352 | - /** |
|
| 353 | - * @return string Returns the mimetype of the data. Returns the empty string |
|
| 354 | - * if the data is not valid. |
|
| 355 | - */ |
|
| 356 | - public function dataMimeType() { |
|
| 357 | - if (!$this->valid()) { |
|
| 358 | - return ''; |
|
| 359 | - } |
|
| 360 | - |
|
| 361 | - switch ($this->mimeType) { |
|
| 362 | - case 'image/png': |
|
| 363 | - case 'image/jpeg': |
|
| 364 | - case 'image/gif': |
|
| 365 | - return $this->mimeType; |
|
| 366 | - default: |
|
| 367 | - return 'image/png'; |
|
| 368 | - } |
|
| 369 | - } |
|
| 370 | - |
|
| 371 | - /** |
|
| 372 | - * @return null|string Returns the raw image data. |
|
| 373 | - */ |
|
| 374 | - public function data() { |
|
| 375 | - if (!$this->valid()) { |
|
| 376 | - return null; |
|
| 377 | - } |
|
| 378 | - ob_start(); |
|
| 379 | - switch ($this->mimeType) { |
|
| 380 | - case "image/png": |
|
| 381 | - $res = imagepng($this->resource); |
|
| 382 | - break; |
|
| 383 | - case "image/jpeg": |
|
| 384 | - /** @psalm-suppress InvalidScalarArgument */ |
|
| 385 | - imageinterlace($this->resource, (PHP_VERSION_ID >= 80000 ? true : 1)); |
|
| 386 | - $quality = $this->getJpegQuality(); |
|
| 387 | - if ($quality !== null) { |
|
| 388 | - $res = imagejpeg($this->resource, null, $quality); |
|
| 389 | - } else { |
|
| 390 | - $res = imagejpeg($this->resource); |
|
| 391 | - } |
|
| 392 | - break; |
|
| 393 | - case "image/gif": |
|
| 394 | - $res = imagegif($this->resource); |
|
| 395 | - break; |
|
| 396 | - default: |
|
| 397 | - $res = imagepng($this->resource); |
|
| 398 | - $this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', ['app' => 'core']); |
|
| 399 | - break; |
|
| 400 | - } |
|
| 401 | - if (!$res) { |
|
| 402 | - $this->logger->error('OC_Image->data. Error getting image data.', ['app' => 'core']); |
|
| 403 | - } |
|
| 404 | - return ob_get_clean(); |
|
| 405 | - } |
|
| 406 | - |
|
| 407 | - /** |
|
| 408 | - * @return string - base64 encoded, which is suitable for embedding in a VCard. |
|
| 409 | - */ |
|
| 410 | - public function __toString() { |
|
| 411 | - return base64_encode($this->data()); |
|
| 412 | - } |
|
| 413 | - |
|
| 414 | - /** |
|
| 415 | - * @return int|null |
|
| 416 | - */ |
|
| 417 | - protected function getJpegQuality() { |
|
| 418 | - $quality = $this->config->getAppValue('preview', 'jpeg_quality', '80'); |
|
| 419 | - if ($quality !== null) { |
|
| 420 | - $quality = min(100, max(10, (int) $quality)); |
|
| 421 | - } |
|
| 422 | - return $quality; |
|
| 423 | - } |
|
| 424 | - |
|
| 425 | - /** |
|
| 426 | - * (I'm open for suggestions on better method name ;) |
|
| 427 | - * Get the orientation based on EXIF data. |
|
| 428 | - * |
|
| 429 | - * @return int The orientation or -1 if no EXIF data is available. |
|
| 430 | - */ |
|
| 431 | - public function getOrientation() { |
|
| 432 | - if ($this->exif !== null) { |
|
| 433 | - return $this->exif['Orientation']; |
|
| 434 | - } |
|
| 435 | - |
|
| 436 | - if ($this->imageType !== IMAGETYPE_JPEG) { |
|
| 437 | - $this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', ['app' => 'core']); |
|
| 438 | - return -1; |
|
| 439 | - } |
|
| 440 | - if (!is_callable('exif_read_data')) { |
|
| 441 | - $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
|
| 442 | - return -1; |
|
| 443 | - } |
|
| 444 | - if (!$this->valid()) { |
|
| 445 | - $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
|
| 446 | - return -1; |
|
| 447 | - } |
|
| 448 | - if (is_null($this->filePath) || !is_readable($this->filePath)) { |
|
| 449 | - $this->logger->debug('OC_Image->fixOrientation() No readable file path set.', ['app' => 'core']); |
|
| 450 | - return -1; |
|
| 451 | - } |
|
| 452 | - $exif = @exif_read_data($this->filePath, 'IFD0'); |
|
| 453 | - if (!$exif) { |
|
| 454 | - return -1; |
|
| 455 | - } |
|
| 456 | - if (!isset($exif['Orientation'])) { |
|
| 457 | - return -1; |
|
| 458 | - } |
|
| 459 | - $this->exif = $exif; |
|
| 460 | - return $exif['Orientation']; |
|
| 461 | - } |
|
| 462 | - |
|
| 463 | - public function readExif($data) { |
|
| 464 | - if (!is_callable('exif_read_data')) { |
|
| 465 | - $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
|
| 466 | - return; |
|
| 467 | - } |
|
| 468 | - if (!$this->valid()) { |
|
| 469 | - $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
|
| 470 | - return; |
|
| 471 | - } |
|
| 472 | - |
|
| 473 | - $exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data)); |
|
| 474 | - if (!$exif) { |
|
| 475 | - return; |
|
| 476 | - } |
|
| 477 | - if (!isset($exif['Orientation'])) { |
|
| 478 | - return; |
|
| 479 | - } |
|
| 480 | - $this->exif = $exif; |
|
| 481 | - } |
|
| 482 | - |
|
| 483 | - /** |
|
| 484 | - * (I'm open for suggestions on better method name ;) |
|
| 485 | - * Fixes orientation based on EXIF data. |
|
| 486 | - * |
|
| 487 | - * @return bool |
|
| 488 | - */ |
|
| 489 | - public function fixOrientation() { |
|
| 490 | - if (!$this->valid()) { |
|
| 491 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 492 | - return false; |
|
| 493 | - } |
|
| 494 | - $o = $this->getOrientation(); |
|
| 495 | - $this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, ['app' => 'core']); |
|
| 496 | - $rotate = 0; |
|
| 497 | - $flip = false; |
|
| 498 | - switch ($o) { |
|
| 499 | - case -1: |
|
| 500 | - return false; //Nothing to fix |
|
| 501 | - case 1: |
|
| 502 | - $rotate = 0; |
|
| 503 | - break; |
|
| 504 | - case 2: |
|
| 505 | - $rotate = 0; |
|
| 506 | - $flip = true; |
|
| 507 | - break; |
|
| 508 | - case 3: |
|
| 509 | - $rotate = 180; |
|
| 510 | - break; |
|
| 511 | - case 4: |
|
| 512 | - $rotate = 180; |
|
| 513 | - $flip = true; |
|
| 514 | - break; |
|
| 515 | - case 5: |
|
| 516 | - $rotate = 90; |
|
| 517 | - $flip = true; |
|
| 518 | - break; |
|
| 519 | - case 6: |
|
| 520 | - $rotate = 270; |
|
| 521 | - break; |
|
| 522 | - case 7: |
|
| 523 | - $rotate = 270; |
|
| 524 | - $flip = true; |
|
| 525 | - break; |
|
| 526 | - case 8: |
|
| 527 | - $rotate = 90; |
|
| 528 | - break; |
|
| 529 | - } |
|
| 530 | - if ($flip && function_exists('imageflip')) { |
|
| 531 | - imageflip($this->resource, IMG_FLIP_HORIZONTAL); |
|
| 532 | - } |
|
| 533 | - if ($rotate) { |
|
| 534 | - $res = imagerotate($this->resource, $rotate, 0); |
|
| 535 | - if ($res) { |
|
| 536 | - if (imagealphablending($res, true)) { |
|
| 537 | - if (imagesavealpha($res, true)) { |
|
| 538 | - imagedestroy($this->resource); |
|
| 539 | - $this->resource = $res; |
|
| 540 | - return true; |
|
| 541 | - } else { |
|
| 542 | - $this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', ['app' => 'core']); |
|
| 543 | - return false; |
|
| 544 | - } |
|
| 545 | - } else { |
|
| 546 | - $this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', ['app' => 'core']); |
|
| 547 | - return false; |
|
| 548 | - } |
|
| 549 | - } else { |
|
| 550 | - $this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', ['app' => 'core']); |
|
| 551 | - return false; |
|
| 552 | - } |
|
| 553 | - } |
|
| 554 | - return false; |
|
| 555 | - } |
|
| 556 | - |
|
| 557 | - /** |
|
| 558 | - * Loads an image from an open file handle. |
|
| 559 | - * It is the responsibility of the caller to position the pointer at the correct place and to close the handle again. |
|
| 560 | - * |
|
| 561 | - * @param resource $handle |
|
| 562 | - * @return resource|\GdImage|false An image resource or false on error |
|
| 563 | - */ |
|
| 564 | - public function loadFromFileHandle($handle) { |
|
| 565 | - $contents = stream_get_contents($handle); |
|
| 566 | - if ($this->loadFromData($contents)) { |
|
| 567 | - return $this->resource; |
|
| 568 | - } |
|
| 569 | - return false; |
|
| 570 | - } |
|
| 571 | - |
|
| 572 | - /** |
|
| 573 | - * Check if allocating an image with the given size is allowed. |
|
| 574 | - * |
|
| 575 | - * @param int $width The image width. |
|
| 576 | - * @param int $height The image height. |
|
| 577 | - * @return bool true if allocating is allowed, false otherwise |
|
| 578 | - */ |
|
| 579 | - private function checkImageMemory($width, $height) { |
|
| 580 | - $memory_limit = $this->config->getSystemValueInt('preview_max_memory', self::DEFAULT_MEMORY_LIMIT); |
|
| 581 | - if ($memory_limit < 0) { |
|
| 582 | - // Not limited. |
|
| 583 | - return true; |
|
| 584 | - } |
|
| 585 | - |
|
| 586 | - // Assume 32 bits per pixel. |
|
| 587 | - if ($width * $height * 4 > $memory_limit * 1024 * 1024) { |
|
| 588 | - $this->logger->debug('Image size of ' . $width . 'x' . $height . ' would exceed allowed memory limit of ' . $memory_limit); |
|
| 589 | - return false; |
|
| 590 | - } |
|
| 591 | - |
|
| 592 | - return true; |
|
| 593 | - } |
|
| 594 | - |
|
| 595 | - /** |
|
| 596 | - * Check if loading an image file from the given path is allowed. |
|
| 597 | - * |
|
| 598 | - * @param string $path The path to a local file. |
|
| 599 | - * @return bool true if allocating is allowed, false otherwise |
|
| 600 | - */ |
|
| 601 | - private function checkImageSize($path) { |
|
| 602 | - $size = getimagesize($path); |
|
| 603 | - if (!$size) { |
|
| 604 | - return true; |
|
| 605 | - } |
|
| 606 | - |
|
| 607 | - $width = $size[0]; |
|
| 608 | - $height = $size[1]; |
|
| 609 | - if (!$this->checkImageMemory($width, $height)) { |
|
| 610 | - return false; |
|
| 611 | - } |
|
| 612 | - |
|
| 613 | - return true; |
|
| 614 | - } |
|
| 615 | - |
|
| 616 | - /** |
|
| 617 | - * Check if loading an image from the given data is allowed. |
|
| 618 | - * |
|
| 619 | - * @param string $data A string of image data as read from a file. |
|
| 620 | - * @return bool true if allocating is allowed, false otherwise |
|
| 621 | - */ |
|
| 622 | - private function checkImageDataSize($data) { |
|
| 623 | - $size = getimagesizefromstring($data); |
|
| 624 | - if (!$size) { |
|
| 625 | - return true; |
|
| 626 | - } |
|
| 627 | - |
|
| 628 | - $width = $size[0]; |
|
| 629 | - $height = $size[1]; |
|
| 630 | - if (!$this->checkImageMemory($width, $height)) { |
|
| 631 | - return false; |
|
| 632 | - } |
|
| 633 | - |
|
| 634 | - return true; |
|
| 635 | - } |
|
| 636 | - |
|
| 637 | - /** |
|
| 638 | - * Loads an image from a local file. |
|
| 639 | - * |
|
| 640 | - * @param bool|string $imagePath The path to a local file. |
|
| 641 | - * @return bool|resource|\GdImage An image resource or false on error |
|
| 642 | - */ |
|
| 643 | - public function loadFromFile($imagePath = false) { |
|
| 644 | - // exif_imagetype throws "read error!" if file is less than 12 byte |
|
| 645 | - if (is_bool($imagePath) || !@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) { |
|
| 646 | - return false; |
|
| 647 | - } |
|
| 648 | - $iType = exif_imagetype($imagePath); |
|
| 649 | - switch ($iType) { |
|
| 650 | - case IMAGETYPE_GIF: |
|
| 651 | - if (imagetypes() & IMG_GIF) { |
|
| 652 | - if (!$this->checkImageSize($imagePath)) { |
|
| 653 | - return false; |
|
| 654 | - } |
|
| 655 | - $this->resource = imagecreatefromgif($imagePath); |
|
| 656 | - if ($this->resource) { |
|
| 657 | - // Preserve transparency |
|
| 658 | - imagealphablending($this->resource, true); |
|
| 659 | - imagesavealpha($this->resource, true); |
|
| 660 | - } else { |
|
| 661 | - $this->logger->debug('OC_Image->loadFromFile, GIF image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 662 | - } |
|
| 663 | - } else { |
|
| 664 | - $this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 665 | - } |
|
| 666 | - break; |
|
| 667 | - case IMAGETYPE_JPEG: |
|
| 668 | - if (imagetypes() & IMG_JPG) { |
|
| 669 | - if (!$this->checkImageSize($imagePath)) { |
|
| 670 | - return false; |
|
| 671 | - } |
|
| 672 | - if (getimagesize($imagePath) !== false) { |
|
| 673 | - $this->resource = @imagecreatefromjpeg($imagePath); |
|
| 674 | - } else { |
|
| 675 | - $this->logger->debug('OC_Image->loadFromFile, JPG image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 676 | - } |
|
| 677 | - } else { |
|
| 678 | - $this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 679 | - } |
|
| 680 | - break; |
|
| 681 | - case IMAGETYPE_PNG: |
|
| 682 | - if (imagetypes() & IMG_PNG) { |
|
| 683 | - if (!$this->checkImageSize($imagePath)) { |
|
| 684 | - return false; |
|
| 685 | - } |
|
| 686 | - $this->resource = @imagecreatefrompng($imagePath); |
|
| 687 | - if ($this->resource) { |
|
| 688 | - // Preserve transparency |
|
| 689 | - imagealphablending($this->resource, true); |
|
| 690 | - imagesavealpha($this->resource, true); |
|
| 691 | - } else { |
|
| 692 | - $this->logger->debug('OC_Image->loadFromFile, PNG image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 693 | - } |
|
| 694 | - } else { |
|
| 695 | - $this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 696 | - } |
|
| 697 | - break; |
|
| 698 | - case IMAGETYPE_XBM: |
|
| 699 | - if (imagetypes() & IMG_XPM) { |
|
| 700 | - if (!$this->checkImageSize($imagePath)) { |
|
| 701 | - return false; |
|
| 702 | - } |
|
| 703 | - $this->resource = @imagecreatefromxbm($imagePath); |
|
| 704 | - } else { |
|
| 705 | - $this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 706 | - } |
|
| 707 | - break; |
|
| 708 | - case IMAGETYPE_WBMP: |
|
| 709 | - if (imagetypes() & IMG_WBMP) { |
|
| 710 | - if (!$this->checkImageSize($imagePath)) { |
|
| 711 | - return false; |
|
| 712 | - } |
|
| 713 | - $this->resource = @imagecreatefromwbmp($imagePath); |
|
| 714 | - } else { |
|
| 715 | - $this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 716 | - } |
|
| 717 | - break; |
|
| 718 | - case IMAGETYPE_BMP: |
|
| 719 | - $this->resource = $this->imagecreatefrombmp($imagePath); |
|
| 720 | - break; |
|
| 721 | - case IMAGETYPE_WEBP: |
|
| 722 | - if (imagetypes() & IMG_WEBP) { |
|
| 723 | - if (!$this->checkImageSize($imagePath)) { |
|
| 724 | - return false; |
|
| 725 | - } |
|
| 726 | - $this->resource = @imagecreatefromwebp($imagePath); |
|
| 727 | - } else { |
|
| 728 | - $this->logger->debug('OC_Image->loadFromFile, webp images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 729 | - } |
|
| 730 | - break; |
|
| 731 | - /* |
|
| 50 | + // Default memory limit for images to load (128 MBytes). |
|
| 51 | + protected const DEFAULT_MEMORY_LIMIT = 128; |
|
| 52 | + |
|
| 53 | + /** @var false|resource|\GdImage */ |
|
| 54 | + protected $resource = false; // tmp resource. |
|
| 55 | + /** @var int */ |
|
| 56 | + protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident. |
|
| 57 | + /** @var string */ |
|
| 58 | + protected $mimeType = 'image/png'; // Default to png |
|
| 59 | + /** @var int */ |
|
| 60 | + protected $bitDepth = 24; |
|
| 61 | + /** @var null|string */ |
|
| 62 | + protected $filePath = null; |
|
| 63 | + /** @var finfo */ |
|
| 64 | + private $fileInfo; |
|
| 65 | + /** @var \OCP\ILogger */ |
|
| 66 | + private $logger; |
|
| 67 | + /** @var \OCP\IConfig */ |
|
| 68 | + private $config; |
|
| 69 | + /** @var array */ |
|
| 70 | + private $exif; |
|
| 71 | + |
|
| 72 | + /** |
|
| 73 | + * Constructor. |
|
| 74 | + * |
|
| 75 | + * @param resource|string|\GdImage $imageRef The path to a local file, a base64 encoded string or a resource created by |
|
| 76 | + * an imagecreate* function. |
|
| 77 | + * @param \OCP\ILogger $logger |
|
| 78 | + * @param \OCP\IConfig $config |
|
| 79 | + * @throws \InvalidArgumentException in case the $imageRef parameter is not null |
|
| 80 | + */ |
|
| 81 | + public function __construct($imageRef = null, \OCP\ILogger $logger = null, \OCP\IConfig $config = null) { |
|
| 82 | + $this->logger = $logger; |
|
| 83 | + if ($logger === null) { |
|
| 84 | + $this->logger = \OC::$server->getLogger(); |
|
| 85 | + } |
|
| 86 | + $this->config = $config; |
|
| 87 | + if ($config === null) { |
|
| 88 | + $this->config = \OC::$server->getConfig(); |
|
| 89 | + } |
|
| 90 | + |
|
| 91 | + if (\OC_Util::fileInfoLoaded()) { |
|
| 92 | + $this->fileInfo = new finfo(FILEINFO_MIME_TYPE); |
|
| 93 | + } |
|
| 94 | + |
|
| 95 | + if ($imageRef !== null) { |
|
| 96 | + throw new \InvalidArgumentException('The first parameter in the constructor is not supported anymore. Please use any of the load* methods of the image object to load an image.'); |
|
| 97 | + } |
|
| 98 | + } |
|
| 99 | + |
|
| 100 | + /** |
|
| 101 | + * Determine whether the object contains an image resource. |
|
| 102 | + * |
|
| 103 | + * @return bool |
|
| 104 | + */ |
|
| 105 | + public function valid() { |
|
| 106 | + if ((is_resource($this->resource) && get_resource_type($this->resource) === 'gd') || |
|
| 107 | + (is_object($this->resource) && get_class($this->resource) === \GdImage::class)) { |
|
| 108 | + return true; |
|
| 109 | + } |
|
| 110 | + |
|
| 111 | + return false; |
|
| 112 | + } |
|
| 113 | + |
|
| 114 | + /** |
|
| 115 | + * Returns the MIME type of the image or an empty string if no image is loaded. |
|
| 116 | + * |
|
| 117 | + * @return string |
|
| 118 | + */ |
|
| 119 | + public function mimeType() { |
|
| 120 | + return $this->valid() ? $this->mimeType : ''; |
|
| 121 | + } |
|
| 122 | + |
|
| 123 | + /** |
|
| 124 | + * Returns the width of the image or -1 if no image is loaded. |
|
| 125 | + * |
|
| 126 | + * @return int |
|
| 127 | + */ |
|
| 128 | + public function width() { |
|
| 129 | + if ($this->valid()) { |
|
| 130 | + $width = imagesx($this->resource); |
|
| 131 | + if ($width !== false) { |
|
| 132 | + return $width; |
|
| 133 | + } |
|
| 134 | + } |
|
| 135 | + return -1; |
|
| 136 | + } |
|
| 137 | + |
|
| 138 | + /** |
|
| 139 | + * Returns the height of the image or -1 if no image is loaded. |
|
| 140 | + * |
|
| 141 | + * @return int |
|
| 142 | + */ |
|
| 143 | + public function height() { |
|
| 144 | + if ($this->valid()) { |
|
| 145 | + $height = imagesy($this->resource); |
|
| 146 | + if ($height !== false) { |
|
| 147 | + return $height; |
|
| 148 | + } |
|
| 149 | + } |
|
| 150 | + return -1; |
|
| 151 | + } |
|
| 152 | + |
|
| 153 | + /** |
|
| 154 | + * Returns the width when the image orientation is top-left. |
|
| 155 | + * |
|
| 156 | + * @return int |
|
| 157 | + */ |
|
| 158 | + public function widthTopLeft() { |
|
| 159 | + $o = $this->getOrientation(); |
|
| 160 | + $this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, ['app' => 'core']); |
|
| 161 | + switch ($o) { |
|
| 162 | + case -1: |
|
| 163 | + case 1: |
|
| 164 | + case 2: // Not tested |
|
| 165 | + case 3: |
|
| 166 | + case 4: // Not tested |
|
| 167 | + return $this->width(); |
|
| 168 | + case 5: // Not tested |
|
| 169 | + case 6: |
|
| 170 | + case 7: // Not tested |
|
| 171 | + case 8: |
|
| 172 | + return $this->height(); |
|
| 173 | + } |
|
| 174 | + return $this->width(); |
|
| 175 | + } |
|
| 176 | + |
|
| 177 | + /** |
|
| 178 | + * Returns the height when the image orientation is top-left. |
|
| 179 | + * |
|
| 180 | + * @return int |
|
| 181 | + */ |
|
| 182 | + public function heightTopLeft() { |
|
| 183 | + $o = $this->getOrientation(); |
|
| 184 | + $this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, ['app' => 'core']); |
|
| 185 | + switch ($o) { |
|
| 186 | + case -1: |
|
| 187 | + case 1: |
|
| 188 | + case 2: // Not tested |
|
| 189 | + case 3: |
|
| 190 | + case 4: // Not tested |
|
| 191 | + return $this->height(); |
|
| 192 | + case 5: // Not tested |
|
| 193 | + case 6: |
|
| 194 | + case 7: // Not tested |
|
| 195 | + case 8: |
|
| 196 | + return $this->width(); |
|
| 197 | + } |
|
| 198 | + return $this->height(); |
|
| 199 | + } |
|
| 200 | + |
|
| 201 | + /** |
|
| 202 | + * Outputs the image. |
|
| 203 | + * |
|
| 204 | + * @param string $mimeType |
|
| 205 | + * @return bool |
|
| 206 | + */ |
|
| 207 | + public function show($mimeType = null) { |
|
| 208 | + if ($mimeType === null) { |
|
| 209 | + $mimeType = $this->mimeType(); |
|
| 210 | + } |
|
| 211 | + header('Content-Type: ' . $mimeType); |
|
| 212 | + return $this->_output(null, $mimeType); |
|
| 213 | + } |
|
| 214 | + |
|
| 215 | + /** |
|
| 216 | + * Saves the image. |
|
| 217 | + * |
|
| 218 | + * @param string $filePath |
|
| 219 | + * @param string $mimeType |
|
| 220 | + * @return bool |
|
| 221 | + */ |
|
| 222 | + |
|
| 223 | + public function save($filePath = null, $mimeType = null) { |
|
| 224 | + if ($mimeType === null) { |
|
| 225 | + $mimeType = $this->mimeType(); |
|
| 226 | + } |
|
| 227 | + if ($filePath === null) { |
|
| 228 | + if ($this->filePath === null) { |
|
| 229 | + $this->logger->error(__METHOD__ . '(): called with no path.', ['app' => 'core']); |
|
| 230 | + return false; |
|
| 231 | + } else { |
|
| 232 | + $filePath = $this->filePath; |
|
| 233 | + } |
|
| 234 | + } |
|
| 235 | + return $this->_output($filePath, $mimeType); |
|
| 236 | + } |
|
| 237 | + |
|
| 238 | + /** |
|
| 239 | + * Outputs/saves the image. |
|
| 240 | + * |
|
| 241 | + * @param string $filePath |
|
| 242 | + * @param string $mimeType |
|
| 243 | + * @return bool |
|
| 244 | + * @throws Exception |
|
| 245 | + */ |
|
| 246 | + private function _output($filePath = null, $mimeType = null) { |
|
| 247 | + if ($filePath) { |
|
| 248 | + if (!file_exists(dirname($filePath))) { |
|
| 249 | + mkdir(dirname($filePath), 0777, true); |
|
| 250 | + } |
|
| 251 | + $isWritable = is_writable(dirname($filePath)); |
|
| 252 | + if (!$isWritable) { |
|
| 253 | + $this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', ['app' => 'core']); |
|
| 254 | + return false; |
|
| 255 | + } elseif ($isWritable && file_exists($filePath) && !is_writable($filePath)) { |
|
| 256 | + $this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', ['app' => 'core']); |
|
| 257 | + return false; |
|
| 258 | + } |
|
| 259 | + } |
|
| 260 | + if (!$this->valid()) { |
|
| 261 | + return false; |
|
| 262 | + } |
|
| 263 | + |
|
| 264 | + $imageType = $this->imageType; |
|
| 265 | + if ($mimeType !== null) { |
|
| 266 | + switch ($mimeType) { |
|
| 267 | + case 'image/gif': |
|
| 268 | + $imageType = IMAGETYPE_GIF; |
|
| 269 | + break; |
|
| 270 | + case 'image/jpeg': |
|
| 271 | + $imageType = IMAGETYPE_JPEG; |
|
| 272 | + break; |
|
| 273 | + case 'image/png': |
|
| 274 | + $imageType = IMAGETYPE_PNG; |
|
| 275 | + break; |
|
| 276 | + case 'image/x-xbitmap': |
|
| 277 | + $imageType = IMAGETYPE_XBM; |
|
| 278 | + break; |
|
| 279 | + case 'image/bmp': |
|
| 280 | + case 'image/x-ms-bmp': |
|
| 281 | + $imageType = IMAGETYPE_BMP; |
|
| 282 | + break; |
|
| 283 | + default: |
|
| 284 | + throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format'); |
|
| 285 | + } |
|
| 286 | + } |
|
| 287 | + |
|
| 288 | + switch ($imageType) { |
|
| 289 | + case IMAGETYPE_GIF: |
|
| 290 | + $retVal = imagegif($this->resource, $filePath); |
|
| 291 | + break; |
|
| 292 | + case IMAGETYPE_JPEG: |
|
| 293 | + /** @psalm-suppress InvalidScalarArgument */ |
|
| 294 | + imageinterlace($this->resource, (PHP_VERSION_ID >= 80000 ? true : 1)); |
|
| 295 | + $retVal = imagejpeg($this->resource, $filePath, $this->getJpegQuality()); |
|
| 296 | + break; |
|
| 297 | + case IMAGETYPE_PNG: |
|
| 298 | + $retVal = imagepng($this->resource, $filePath); |
|
| 299 | + break; |
|
| 300 | + case IMAGETYPE_XBM: |
|
| 301 | + if (function_exists('imagexbm')) { |
|
| 302 | + $retVal = imagexbm($this->resource, $filePath); |
|
| 303 | + } else { |
|
| 304 | + throw new Exception('\OC_Image::_output(): imagexbm() is not supported.'); |
|
| 305 | + } |
|
| 306 | + |
|
| 307 | + break; |
|
| 308 | + case IMAGETYPE_WBMP: |
|
| 309 | + $retVal = imagewbmp($this->resource, $filePath); |
|
| 310 | + break; |
|
| 311 | + case IMAGETYPE_BMP: |
|
| 312 | + $retVal = imagebmp($this->resource, $filePath, $this->bitDepth); |
|
| 313 | + break; |
|
| 314 | + default: |
|
| 315 | + $retVal = imagepng($this->resource, $filePath); |
|
| 316 | + } |
|
| 317 | + return $retVal; |
|
| 318 | + } |
|
| 319 | + |
|
| 320 | + /** |
|
| 321 | + * Prints the image when called as $image(). |
|
| 322 | + */ |
|
| 323 | + public function __invoke() { |
|
| 324 | + return $this->show(); |
|
| 325 | + } |
|
| 326 | + |
|
| 327 | + /** |
|
| 328 | + * @param resource|\GdImage $resource |
|
| 329 | + * @throws \InvalidArgumentException in case the supplied resource does not have the type "gd" |
|
| 330 | + */ |
|
| 331 | + public function setResource($resource) { |
|
| 332 | + // For PHP<8 |
|
| 333 | + if (is_resource($resource) && get_resource_type($resource) === 'gd') { |
|
| 334 | + $this->resource = $resource; |
|
| 335 | + return; |
|
| 336 | + } |
|
| 337 | + // PHP 8 has real objects for GD stuff |
|
| 338 | + if (is_object($resource) && get_class($resource) === \GdImage::class) { |
|
| 339 | + $this->resource = $resource; |
|
| 340 | + return; |
|
| 341 | + } |
|
| 342 | + throw new \InvalidArgumentException('Supplied resource is not of type "gd".'); |
|
| 343 | + } |
|
| 344 | + |
|
| 345 | + /** |
|
| 346 | + * @return false|resource|\GdImage Returns the image resource if any |
|
| 347 | + */ |
|
| 348 | + public function resource() { |
|
| 349 | + return $this->resource; |
|
| 350 | + } |
|
| 351 | + |
|
| 352 | + /** |
|
| 353 | + * @return string Returns the mimetype of the data. Returns the empty string |
|
| 354 | + * if the data is not valid. |
|
| 355 | + */ |
|
| 356 | + public function dataMimeType() { |
|
| 357 | + if (!$this->valid()) { |
|
| 358 | + return ''; |
|
| 359 | + } |
|
| 360 | + |
|
| 361 | + switch ($this->mimeType) { |
|
| 362 | + case 'image/png': |
|
| 363 | + case 'image/jpeg': |
|
| 364 | + case 'image/gif': |
|
| 365 | + return $this->mimeType; |
|
| 366 | + default: |
|
| 367 | + return 'image/png'; |
|
| 368 | + } |
|
| 369 | + } |
|
| 370 | + |
|
| 371 | + /** |
|
| 372 | + * @return null|string Returns the raw image data. |
|
| 373 | + */ |
|
| 374 | + public function data() { |
|
| 375 | + if (!$this->valid()) { |
|
| 376 | + return null; |
|
| 377 | + } |
|
| 378 | + ob_start(); |
|
| 379 | + switch ($this->mimeType) { |
|
| 380 | + case "image/png": |
|
| 381 | + $res = imagepng($this->resource); |
|
| 382 | + break; |
|
| 383 | + case "image/jpeg": |
|
| 384 | + /** @psalm-suppress InvalidScalarArgument */ |
|
| 385 | + imageinterlace($this->resource, (PHP_VERSION_ID >= 80000 ? true : 1)); |
|
| 386 | + $quality = $this->getJpegQuality(); |
|
| 387 | + if ($quality !== null) { |
|
| 388 | + $res = imagejpeg($this->resource, null, $quality); |
|
| 389 | + } else { |
|
| 390 | + $res = imagejpeg($this->resource); |
|
| 391 | + } |
|
| 392 | + break; |
|
| 393 | + case "image/gif": |
|
| 394 | + $res = imagegif($this->resource); |
|
| 395 | + break; |
|
| 396 | + default: |
|
| 397 | + $res = imagepng($this->resource); |
|
| 398 | + $this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', ['app' => 'core']); |
|
| 399 | + break; |
|
| 400 | + } |
|
| 401 | + if (!$res) { |
|
| 402 | + $this->logger->error('OC_Image->data. Error getting image data.', ['app' => 'core']); |
|
| 403 | + } |
|
| 404 | + return ob_get_clean(); |
|
| 405 | + } |
|
| 406 | + |
|
| 407 | + /** |
|
| 408 | + * @return string - base64 encoded, which is suitable for embedding in a VCard. |
|
| 409 | + */ |
|
| 410 | + public function __toString() { |
|
| 411 | + return base64_encode($this->data()); |
|
| 412 | + } |
|
| 413 | + |
|
| 414 | + /** |
|
| 415 | + * @return int|null |
|
| 416 | + */ |
|
| 417 | + protected function getJpegQuality() { |
|
| 418 | + $quality = $this->config->getAppValue('preview', 'jpeg_quality', '80'); |
|
| 419 | + if ($quality !== null) { |
|
| 420 | + $quality = min(100, max(10, (int) $quality)); |
|
| 421 | + } |
|
| 422 | + return $quality; |
|
| 423 | + } |
|
| 424 | + |
|
| 425 | + /** |
|
| 426 | + * (I'm open for suggestions on better method name ;) |
|
| 427 | + * Get the orientation based on EXIF data. |
|
| 428 | + * |
|
| 429 | + * @return int The orientation or -1 if no EXIF data is available. |
|
| 430 | + */ |
|
| 431 | + public function getOrientation() { |
|
| 432 | + if ($this->exif !== null) { |
|
| 433 | + return $this->exif['Orientation']; |
|
| 434 | + } |
|
| 435 | + |
|
| 436 | + if ($this->imageType !== IMAGETYPE_JPEG) { |
|
| 437 | + $this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', ['app' => 'core']); |
|
| 438 | + return -1; |
|
| 439 | + } |
|
| 440 | + if (!is_callable('exif_read_data')) { |
|
| 441 | + $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
|
| 442 | + return -1; |
|
| 443 | + } |
|
| 444 | + if (!$this->valid()) { |
|
| 445 | + $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
|
| 446 | + return -1; |
|
| 447 | + } |
|
| 448 | + if (is_null($this->filePath) || !is_readable($this->filePath)) { |
|
| 449 | + $this->logger->debug('OC_Image->fixOrientation() No readable file path set.', ['app' => 'core']); |
|
| 450 | + return -1; |
|
| 451 | + } |
|
| 452 | + $exif = @exif_read_data($this->filePath, 'IFD0'); |
|
| 453 | + if (!$exif) { |
|
| 454 | + return -1; |
|
| 455 | + } |
|
| 456 | + if (!isset($exif['Orientation'])) { |
|
| 457 | + return -1; |
|
| 458 | + } |
|
| 459 | + $this->exif = $exif; |
|
| 460 | + return $exif['Orientation']; |
|
| 461 | + } |
|
| 462 | + |
|
| 463 | + public function readExif($data) { |
|
| 464 | + if (!is_callable('exif_read_data')) { |
|
| 465 | + $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
|
| 466 | + return; |
|
| 467 | + } |
|
| 468 | + if (!$this->valid()) { |
|
| 469 | + $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
|
| 470 | + return; |
|
| 471 | + } |
|
| 472 | + |
|
| 473 | + $exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data)); |
|
| 474 | + if (!$exif) { |
|
| 475 | + return; |
|
| 476 | + } |
|
| 477 | + if (!isset($exif['Orientation'])) { |
|
| 478 | + return; |
|
| 479 | + } |
|
| 480 | + $this->exif = $exif; |
|
| 481 | + } |
|
| 482 | + |
|
| 483 | + /** |
|
| 484 | + * (I'm open for suggestions on better method name ;) |
|
| 485 | + * Fixes orientation based on EXIF data. |
|
| 486 | + * |
|
| 487 | + * @return bool |
|
| 488 | + */ |
|
| 489 | + public function fixOrientation() { |
|
| 490 | + if (!$this->valid()) { |
|
| 491 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 492 | + return false; |
|
| 493 | + } |
|
| 494 | + $o = $this->getOrientation(); |
|
| 495 | + $this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, ['app' => 'core']); |
|
| 496 | + $rotate = 0; |
|
| 497 | + $flip = false; |
|
| 498 | + switch ($o) { |
|
| 499 | + case -1: |
|
| 500 | + return false; //Nothing to fix |
|
| 501 | + case 1: |
|
| 502 | + $rotate = 0; |
|
| 503 | + break; |
|
| 504 | + case 2: |
|
| 505 | + $rotate = 0; |
|
| 506 | + $flip = true; |
|
| 507 | + break; |
|
| 508 | + case 3: |
|
| 509 | + $rotate = 180; |
|
| 510 | + break; |
|
| 511 | + case 4: |
|
| 512 | + $rotate = 180; |
|
| 513 | + $flip = true; |
|
| 514 | + break; |
|
| 515 | + case 5: |
|
| 516 | + $rotate = 90; |
|
| 517 | + $flip = true; |
|
| 518 | + break; |
|
| 519 | + case 6: |
|
| 520 | + $rotate = 270; |
|
| 521 | + break; |
|
| 522 | + case 7: |
|
| 523 | + $rotate = 270; |
|
| 524 | + $flip = true; |
|
| 525 | + break; |
|
| 526 | + case 8: |
|
| 527 | + $rotate = 90; |
|
| 528 | + break; |
|
| 529 | + } |
|
| 530 | + if ($flip && function_exists('imageflip')) { |
|
| 531 | + imageflip($this->resource, IMG_FLIP_HORIZONTAL); |
|
| 532 | + } |
|
| 533 | + if ($rotate) { |
|
| 534 | + $res = imagerotate($this->resource, $rotate, 0); |
|
| 535 | + if ($res) { |
|
| 536 | + if (imagealphablending($res, true)) { |
|
| 537 | + if (imagesavealpha($res, true)) { |
|
| 538 | + imagedestroy($this->resource); |
|
| 539 | + $this->resource = $res; |
|
| 540 | + return true; |
|
| 541 | + } else { |
|
| 542 | + $this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', ['app' => 'core']); |
|
| 543 | + return false; |
|
| 544 | + } |
|
| 545 | + } else { |
|
| 546 | + $this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', ['app' => 'core']); |
|
| 547 | + return false; |
|
| 548 | + } |
|
| 549 | + } else { |
|
| 550 | + $this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', ['app' => 'core']); |
|
| 551 | + return false; |
|
| 552 | + } |
|
| 553 | + } |
|
| 554 | + return false; |
|
| 555 | + } |
|
| 556 | + |
|
| 557 | + /** |
|
| 558 | + * Loads an image from an open file handle. |
|
| 559 | + * It is the responsibility of the caller to position the pointer at the correct place and to close the handle again. |
|
| 560 | + * |
|
| 561 | + * @param resource $handle |
|
| 562 | + * @return resource|\GdImage|false An image resource or false on error |
|
| 563 | + */ |
|
| 564 | + public function loadFromFileHandle($handle) { |
|
| 565 | + $contents = stream_get_contents($handle); |
|
| 566 | + if ($this->loadFromData($contents)) { |
|
| 567 | + return $this->resource; |
|
| 568 | + } |
|
| 569 | + return false; |
|
| 570 | + } |
|
| 571 | + |
|
| 572 | + /** |
|
| 573 | + * Check if allocating an image with the given size is allowed. |
|
| 574 | + * |
|
| 575 | + * @param int $width The image width. |
|
| 576 | + * @param int $height The image height. |
|
| 577 | + * @return bool true if allocating is allowed, false otherwise |
|
| 578 | + */ |
|
| 579 | + private function checkImageMemory($width, $height) { |
|
| 580 | + $memory_limit = $this->config->getSystemValueInt('preview_max_memory', self::DEFAULT_MEMORY_LIMIT); |
|
| 581 | + if ($memory_limit < 0) { |
|
| 582 | + // Not limited. |
|
| 583 | + return true; |
|
| 584 | + } |
|
| 585 | + |
|
| 586 | + // Assume 32 bits per pixel. |
|
| 587 | + if ($width * $height * 4 > $memory_limit * 1024 * 1024) { |
|
| 588 | + $this->logger->debug('Image size of ' . $width . 'x' . $height . ' would exceed allowed memory limit of ' . $memory_limit); |
|
| 589 | + return false; |
|
| 590 | + } |
|
| 591 | + |
|
| 592 | + return true; |
|
| 593 | + } |
|
| 594 | + |
|
| 595 | + /** |
|
| 596 | + * Check if loading an image file from the given path is allowed. |
|
| 597 | + * |
|
| 598 | + * @param string $path The path to a local file. |
|
| 599 | + * @return bool true if allocating is allowed, false otherwise |
|
| 600 | + */ |
|
| 601 | + private function checkImageSize($path) { |
|
| 602 | + $size = getimagesize($path); |
|
| 603 | + if (!$size) { |
|
| 604 | + return true; |
|
| 605 | + } |
|
| 606 | + |
|
| 607 | + $width = $size[0]; |
|
| 608 | + $height = $size[1]; |
|
| 609 | + if (!$this->checkImageMemory($width, $height)) { |
|
| 610 | + return false; |
|
| 611 | + } |
|
| 612 | + |
|
| 613 | + return true; |
|
| 614 | + } |
|
| 615 | + |
|
| 616 | + /** |
|
| 617 | + * Check if loading an image from the given data is allowed. |
|
| 618 | + * |
|
| 619 | + * @param string $data A string of image data as read from a file. |
|
| 620 | + * @return bool true if allocating is allowed, false otherwise |
|
| 621 | + */ |
|
| 622 | + private function checkImageDataSize($data) { |
|
| 623 | + $size = getimagesizefromstring($data); |
|
| 624 | + if (!$size) { |
|
| 625 | + return true; |
|
| 626 | + } |
|
| 627 | + |
|
| 628 | + $width = $size[0]; |
|
| 629 | + $height = $size[1]; |
|
| 630 | + if (!$this->checkImageMemory($width, $height)) { |
|
| 631 | + return false; |
|
| 632 | + } |
|
| 633 | + |
|
| 634 | + return true; |
|
| 635 | + } |
|
| 636 | + |
|
| 637 | + /** |
|
| 638 | + * Loads an image from a local file. |
|
| 639 | + * |
|
| 640 | + * @param bool|string $imagePath The path to a local file. |
|
| 641 | + * @return bool|resource|\GdImage An image resource or false on error |
|
| 642 | + */ |
|
| 643 | + public function loadFromFile($imagePath = false) { |
|
| 644 | + // exif_imagetype throws "read error!" if file is less than 12 byte |
|
| 645 | + if (is_bool($imagePath) || !@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) { |
|
| 646 | + return false; |
|
| 647 | + } |
|
| 648 | + $iType = exif_imagetype($imagePath); |
|
| 649 | + switch ($iType) { |
|
| 650 | + case IMAGETYPE_GIF: |
|
| 651 | + if (imagetypes() & IMG_GIF) { |
|
| 652 | + if (!$this->checkImageSize($imagePath)) { |
|
| 653 | + return false; |
|
| 654 | + } |
|
| 655 | + $this->resource = imagecreatefromgif($imagePath); |
|
| 656 | + if ($this->resource) { |
|
| 657 | + // Preserve transparency |
|
| 658 | + imagealphablending($this->resource, true); |
|
| 659 | + imagesavealpha($this->resource, true); |
|
| 660 | + } else { |
|
| 661 | + $this->logger->debug('OC_Image->loadFromFile, GIF image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 662 | + } |
|
| 663 | + } else { |
|
| 664 | + $this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 665 | + } |
|
| 666 | + break; |
|
| 667 | + case IMAGETYPE_JPEG: |
|
| 668 | + if (imagetypes() & IMG_JPG) { |
|
| 669 | + if (!$this->checkImageSize($imagePath)) { |
|
| 670 | + return false; |
|
| 671 | + } |
|
| 672 | + if (getimagesize($imagePath) !== false) { |
|
| 673 | + $this->resource = @imagecreatefromjpeg($imagePath); |
|
| 674 | + } else { |
|
| 675 | + $this->logger->debug('OC_Image->loadFromFile, JPG image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 676 | + } |
|
| 677 | + } else { |
|
| 678 | + $this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 679 | + } |
|
| 680 | + break; |
|
| 681 | + case IMAGETYPE_PNG: |
|
| 682 | + if (imagetypes() & IMG_PNG) { |
|
| 683 | + if (!$this->checkImageSize($imagePath)) { |
|
| 684 | + return false; |
|
| 685 | + } |
|
| 686 | + $this->resource = @imagecreatefrompng($imagePath); |
|
| 687 | + if ($this->resource) { |
|
| 688 | + // Preserve transparency |
|
| 689 | + imagealphablending($this->resource, true); |
|
| 690 | + imagesavealpha($this->resource, true); |
|
| 691 | + } else { |
|
| 692 | + $this->logger->debug('OC_Image->loadFromFile, PNG image not valid: ' . $imagePath, ['app' => 'core']); |
|
| 693 | + } |
|
| 694 | + } else { |
|
| 695 | + $this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 696 | + } |
|
| 697 | + break; |
|
| 698 | + case IMAGETYPE_XBM: |
|
| 699 | + if (imagetypes() & IMG_XPM) { |
|
| 700 | + if (!$this->checkImageSize($imagePath)) { |
|
| 701 | + return false; |
|
| 702 | + } |
|
| 703 | + $this->resource = @imagecreatefromxbm($imagePath); |
|
| 704 | + } else { |
|
| 705 | + $this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 706 | + } |
|
| 707 | + break; |
|
| 708 | + case IMAGETYPE_WBMP: |
|
| 709 | + if (imagetypes() & IMG_WBMP) { |
|
| 710 | + if (!$this->checkImageSize($imagePath)) { |
|
| 711 | + return false; |
|
| 712 | + } |
|
| 713 | + $this->resource = @imagecreatefromwbmp($imagePath); |
|
| 714 | + } else { |
|
| 715 | + $this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 716 | + } |
|
| 717 | + break; |
|
| 718 | + case IMAGETYPE_BMP: |
|
| 719 | + $this->resource = $this->imagecreatefrombmp($imagePath); |
|
| 720 | + break; |
|
| 721 | + case IMAGETYPE_WEBP: |
|
| 722 | + if (imagetypes() & IMG_WEBP) { |
|
| 723 | + if (!$this->checkImageSize($imagePath)) { |
|
| 724 | + return false; |
|
| 725 | + } |
|
| 726 | + $this->resource = @imagecreatefromwebp($imagePath); |
|
| 727 | + } else { |
|
| 728 | + $this->logger->debug('OC_Image->loadFromFile, webp images not supported: ' . $imagePath, ['app' => 'core']); |
|
| 729 | + } |
|
| 730 | + break; |
|
| 731 | + /* |
|
| 732 | 732 | case IMAGETYPE_TIFF_II: // (intel byte order) |
| 733 | 733 | break; |
| 734 | 734 | case IMAGETYPE_TIFF_MM: // (motorola byte order) |
@@ -752,687 +752,687 @@ discard block |
||
| 752 | 752 | case IMAGETYPE_PSD: |
| 753 | 753 | break; |
| 754 | 754 | */ |
| 755 | - default: |
|
| 756 | - |
|
| 757 | - // this is mostly file created from encrypted file |
|
| 758 | - $data = file_get_contents($imagePath); |
|
| 759 | - if (!$this->checkImageDataSize($data)) { |
|
| 760 | - return false; |
|
| 761 | - } |
|
| 762 | - $this->resource = imagecreatefromstring($data); |
|
| 763 | - $iType = IMAGETYPE_PNG; |
|
| 764 | - $this->logger->debug('OC_Image->loadFromFile, Default', ['app' => 'core']); |
|
| 765 | - break; |
|
| 766 | - } |
|
| 767 | - if ($this->valid()) { |
|
| 768 | - $this->imageType = $iType; |
|
| 769 | - $this->mimeType = image_type_to_mime_type($iType); |
|
| 770 | - $this->filePath = $imagePath; |
|
| 771 | - } |
|
| 772 | - return $this->resource; |
|
| 773 | - } |
|
| 774 | - |
|
| 775 | - /** |
|
| 776 | - * Loads an image from a string of data. |
|
| 777 | - * |
|
| 778 | - * @param string $str A string of image data as read from a file. |
|
| 779 | - * @return bool|resource|\GdImage An image resource or false on error |
|
| 780 | - */ |
|
| 781 | - public function loadFromData($str) { |
|
| 782 | - if (!is_string($str)) { |
|
| 783 | - return false; |
|
| 784 | - } |
|
| 785 | - if (!$this->checkImageDataSize($str)) { |
|
| 786 | - return false; |
|
| 787 | - } |
|
| 788 | - $this->resource = @imagecreatefromstring($str); |
|
| 789 | - if ($this->fileInfo) { |
|
| 790 | - $this->mimeType = $this->fileInfo->buffer($str); |
|
| 791 | - } |
|
| 792 | - if ($this->valid()) { |
|
| 793 | - imagealphablending($this->resource, false); |
|
| 794 | - imagesavealpha($this->resource, true); |
|
| 795 | - } |
|
| 796 | - |
|
| 797 | - if (!$this->resource) { |
|
| 798 | - $this->logger->debug('OC_Image->loadFromFile, could not load', ['app' => 'core']); |
|
| 799 | - return false; |
|
| 800 | - } |
|
| 801 | - return $this->resource; |
|
| 802 | - } |
|
| 803 | - |
|
| 804 | - /** |
|
| 805 | - * Loads an image from a base64 encoded string. |
|
| 806 | - * |
|
| 807 | - * @param string $str A string base64 encoded string of image data. |
|
| 808 | - * @return bool|resource|\GdImage An image resource or false on error |
|
| 809 | - */ |
|
| 810 | - public function loadFromBase64($str) { |
|
| 811 | - if (!is_string($str)) { |
|
| 812 | - return false; |
|
| 813 | - } |
|
| 814 | - $data = base64_decode($str); |
|
| 815 | - if ($data) { // try to load from string data |
|
| 816 | - if (!$this->checkImageDataSize($data)) { |
|
| 817 | - return false; |
|
| 818 | - } |
|
| 819 | - $this->resource = @imagecreatefromstring($data); |
|
| 820 | - if ($this->fileInfo) { |
|
| 821 | - $this->mimeType = $this->fileInfo->buffer($data); |
|
| 822 | - } |
|
| 823 | - if (!$this->resource) { |
|
| 824 | - $this->logger->debug('OC_Image->loadFromBase64, could not load', ['app' => 'core']); |
|
| 825 | - return false; |
|
| 826 | - } |
|
| 827 | - return $this->resource; |
|
| 828 | - } else { |
|
| 829 | - return false; |
|
| 830 | - } |
|
| 831 | - } |
|
| 832 | - |
|
| 833 | - /** |
|
| 834 | - * Create a new image from file or URL |
|
| 835 | - * |
|
| 836 | - * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm |
|
| 837 | - * @version 1.00 |
|
| 838 | - * @param string $fileName <p> |
|
| 839 | - * Path to the BMP image. |
|
| 840 | - * </p> |
|
| 841 | - * @return bool|resource|\GdImage an image resource identifier on success, <b>FALSE</b> on errors. |
|
| 842 | - */ |
|
| 843 | - private function imagecreatefrombmp($fileName) { |
|
| 844 | - if (!($fh = fopen($fileName, 'rb'))) { |
|
| 845 | - $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, ['app' => 'core']); |
|
| 846 | - return false; |
|
| 847 | - } |
|
| 848 | - // read file header |
|
| 849 | - $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14)); |
|
| 850 | - // check for bitmap |
|
| 851 | - if ($meta['type'] != 19778) { |
|
| 852 | - fclose($fh); |
|
| 853 | - $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
|
| 854 | - return false; |
|
| 855 | - } |
|
| 856 | - // read image header |
|
| 857 | - $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40)); |
|
| 858 | - // read additional 16bit header |
|
| 859 | - if ($meta['bits'] == 16) { |
|
| 860 | - $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12)); |
|
| 861 | - } |
|
| 862 | - // set bytes and padding |
|
| 863 | - $meta['bytes'] = $meta['bits'] / 8; |
|
| 864 | - $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call |
|
| 865 | - $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4))); |
|
| 866 | - if ($meta['decal'] == 4) { |
|
| 867 | - $meta['decal'] = 0; |
|
| 868 | - } |
|
| 869 | - // obtain imagesize |
|
| 870 | - if ($meta['imagesize'] < 1) { |
|
| 871 | - $meta['imagesize'] = $meta['filesize'] - $meta['offset']; |
|
| 872 | - // in rare cases filesize is equal to offset so we need to read physical size |
|
| 873 | - if ($meta['imagesize'] < 1) { |
|
| 874 | - $meta['imagesize'] = @filesize($fileName) - $meta['offset']; |
|
| 875 | - if ($meta['imagesize'] < 1) { |
|
| 876 | - fclose($fh); |
|
| 877 | - $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
|
| 878 | - return false; |
|
| 879 | - } |
|
| 880 | - } |
|
| 881 | - } |
|
| 882 | - // calculate colors |
|
| 883 | - $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors']; |
|
| 884 | - // read color palette |
|
| 885 | - $palette = []; |
|
| 886 | - if ($meta['bits'] < 16) { |
|
| 887 | - $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4)); |
|
| 888 | - // in rare cases the color value is signed |
|
| 889 | - if ($palette[1] < 0) { |
|
| 890 | - foreach ($palette as $i => $color) { |
|
| 891 | - $palette[$i] = $color + 16777216; |
|
| 892 | - } |
|
| 893 | - } |
|
| 894 | - } |
|
| 895 | - if (!$this->checkImageMemory($meta['width'], $meta['height'])) { |
|
| 896 | - fclose($fh); |
|
| 897 | - return false; |
|
| 898 | - } |
|
| 899 | - // create gd image |
|
| 900 | - $im = imagecreatetruecolor($meta['width'], $meta['height']); |
|
| 901 | - if ($im == false) { |
|
| 902 | - fclose($fh); |
|
| 903 | - $this->logger->warning( |
|
| 904 | - 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'], |
|
| 905 | - ['app' => 'core']); |
|
| 906 | - return false; |
|
| 907 | - } |
|
| 908 | - |
|
| 909 | - $data = fread($fh, $meta['imagesize']); |
|
| 910 | - $p = 0; |
|
| 911 | - $vide = chr(0); |
|
| 912 | - $y = $meta['height'] - 1; |
|
| 913 | - $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!'; |
|
| 914 | - // loop through the image data beginning with the lower left corner |
|
| 915 | - while ($y >= 0) { |
|
| 916 | - $x = 0; |
|
| 917 | - while ($x < $meta['width']) { |
|
| 918 | - switch ($meta['bits']) { |
|
| 919 | - case 32: |
|
| 920 | - case 24: |
|
| 921 | - if (!($part = substr($data, $p, 3))) { |
|
| 922 | - $this->logger->warning($error, ['app' => 'core']); |
|
| 923 | - return $im; |
|
| 924 | - } |
|
| 925 | - $color = @unpack('V', $part . $vide); |
|
| 926 | - break; |
|
| 927 | - case 16: |
|
| 928 | - if (!($part = substr($data, $p, 2))) { |
|
| 929 | - fclose($fh); |
|
| 930 | - $this->logger->warning($error, ['app' => 'core']); |
|
| 931 | - return $im; |
|
| 932 | - } |
|
| 933 | - $color = @unpack('v', $part); |
|
| 934 | - $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3); |
|
| 935 | - break; |
|
| 936 | - case 8: |
|
| 937 | - $color = @unpack('n', $vide . ($data[$p] ?? '')); |
|
| 938 | - $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 939 | - break; |
|
| 940 | - case 4: |
|
| 941 | - $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
| 942 | - $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F; |
|
| 943 | - $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 944 | - break; |
|
| 945 | - case 1: |
|
| 946 | - $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
| 947 | - switch (($p * 8) % 8) { |
|
| 948 | - case 0: |
|
| 949 | - $color[1] = $color[1] >> 7; |
|
| 950 | - break; |
|
| 951 | - case 1: |
|
| 952 | - $color[1] = ($color[1] & 0x40) >> 6; |
|
| 953 | - break; |
|
| 954 | - case 2: |
|
| 955 | - $color[1] = ($color[1] & 0x20) >> 5; |
|
| 956 | - break; |
|
| 957 | - case 3: |
|
| 958 | - $color[1] = ($color[1] & 0x10) >> 4; |
|
| 959 | - break; |
|
| 960 | - case 4: |
|
| 961 | - $color[1] = ($color[1] & 0x8) >> 3; |
|
| 962 | - break; |
|
| 963 | - case 5: |
|
| 964 | - $color[1] = ($color[1] & 0x4) >> 2; |
|
| 965 | - break; |
|
| 966 | - case 6: |
|
| 967 | - $color[1] = ($color[1] & 0x2) >> 1; |
|
| 968 | - break; |
|
| 969 | - case 7: |
|
| 970 | - $color[1] = ($color[1] & 0x1); |
|
| 971 | - break; |
|
| 972 | - } |
|
| 973 | - $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 974 | - break; |
|
| 975 | - default: |
|
| 976 | - fclose($fh); |
|
| 977 | - $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', ['app' => 'core']); |
|
| 978 | - return false; |
|
| 979 | - } |
|
| 980 | - imagesetpixel($im, $x, $y, $color[1]); |
|
| 981 | - $x++; |
|
| 982 | - $p += $meta['bytes']; |
|
| 983 | - } |
|
| 984 | - $y--; |
|
| 985 | - $p += $meta['decal']; |
|
| 986 | - } |
|
| 987 | - fclose($fh); |
|
| 988 | - return $im; |
|
| 989 | - } |
|
| 990 | - |
|
| 991 | - /** |
|
| 992 | - * Resizes the image preserving ratio. |
|
| 993 | - * |
|
| 994 | - * @param integer $maxSize The maximum size of either the width or height. |
|
| 995 | - * @return bool |
|
| 996 | - */ |
|
| 997 | - public function resize($maxSize) { |
|
| 998 | - if (!$this->valid()) { |
|
| 999 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1000 | - return false; |
|
| 1001 | - } |
|
| 1002 | - $result = $this->resizeNew($maxSize); |
|
| 1003 | - imagedestroy($this->resource); |
|
| 1004 | - $this->resource = $result; |
|
| 1005 | - return $this->valid(); |
|
| 1006 | - } |
|
| 1007 | - |
|
| 1008 | - /** |
|
| 1009 | - * @param $maxSize |
|
| 1010 | - * @return resource|bool|\GdImage |
|
| 1011 | - */ |
|
| 1012 | - private function resizeNew($maxSize) { |
|
| 1013 | - if (!$this->valid()) { |
|
| 1014 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1015 | - return false; |
|
| 1016 | - } |
|
| 1017 | - $widthOrig = imagesx($this->resource); |
|
| 1018 | - $heightOrig = imagesy($this->resource); |
|
| 1019 | - $ratioOrig = $widthOrig / $heightOrig; |
|
| 1020 | - |
|
| 1021 | - if ($ratioOrig > 1) { |
|
| 1022 | - $newHeight = round($maxSize / $ratioOrig); |
|
| 1023 | - $newWidth = $maxSize; |
|
| 1024 | - } else { |
|
| 1025 | - $newWidth = round($maxSize * $ratioOrig); |
|
| 1026 | - $newHeight = $maxSize; |
|
| 1027 | - } |
|
| 1028 | - |
|
| 1029 | - return $this->preciseResizeNew((int)round($newWidth), (int)round($newHeight)); |
|
| 1030 | - } |
|
| 1031 | - |
|
| 1032 | - /** |
|
| 1033 | - * @param int $width |
|
| 1034 | - * @param int $height |
|
| 1035 | - * @return bool |
|
| 1036 | - */ |
|
| 1037 | - public function preciseResize(int $width, int $height): bool { |
|
| 1038 | - if (!$this->valid()) { |
|
| 1039 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1040 | - return false; |
|
| 1041 | - } |
|
| 1042 | - $result = $this->preciseResizeNew($width, $height); |
|
| 1043 | - imagedestroy($this->resource); |
|
| 1044 | - $this->resource = $result; |
|
| 1045 | - return $this->valid(); |
|
| 1046 | - } |
|
| 1047 | - |
|
| 1048 | - |
|
| 1049 | - /** |
|
| 1050 | - * @param int $width |
|
| 1051 | - * @param int $height |
|
| 1052 | - * @return resource|bool|\GdImage |
|
| 1053 | - */ |
|
| 1054 | - public function preciseResizeNew(int $width, int $height) { |
|
| 1055 | - if (!($width > 0) || !($height > 0)) { |
|
| 1056 | - $this->logger->info(__METHOD__ . '(): Requested image size not bigger than 0', ['app' => 'core']); |
|
| 1057 | - return false; |
|
| 1058 | - } |
|
| 1059 | - if (!$this->valid()) { |
|
| 1060 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1061 | - return false; |
|
| 1062 | - } |
|
| 1063 | - $widthOrig = imagesx($this->resource); |
|
| 1064 | - $heightOrig = imagesy($this->resource); |
|
| 1065 | - $process = imagecreatetruecolor($width, $height); |
|
| 1066 | - if ($process === false) { |
|
| 1067 | - $this->logger->debug(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
|
| 1068 | - return false; |
|
| 1069 | - } |
|
| 1070 | - |
|
| 1071 | - // preserve transparency |
|
| 1072 | - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1073 | - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1074 | - imagealphablending($process, false); |
|
| 1075 | - imagesavealpha($process, true); |
|
| 1076 | - } |
|
| 1077 | - |
|
| 1078 | - $res = imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig); |
|
| 1079 | - if ($res === false) { |
|
| 1080 | - $this->logger->debug(__METHOD__ . '(): Error re-sampling process image', ['app' => 'core']); |
|
| 1081 | - imagedestroy($process); |
|
| 1082 | - return false; |
|
| 1083 | - } |
|
| 1084 | - return $process; |
|
| 1085 | - } |
|
| 1086 | - |
|
| 1087 | - /** |
|
| 1088 | - * Crops the image to the middle square. If the image is already square it just returns. |
|
| 1089 | - * |
|
| 1090 | - * @param int $size maximum size for the result (optional) |
|
| 1091 | - * @return bool for success or failure |
|
| 1092 | - */ |
|
| 1093 | - public function centerCrop($size = 0) { |
|
| 1094 | - if (!$this->valid()) { |
|
| 1095 | - $this->logger->debug('OC_Image->centerCrop, No image loaded', ['app' => 'core']); |
|
| 1096 | - return false; |
|
| 1097 | - } |
|
| 1098 | - $widthOrig = imagesx($this->resource); |
|
| 1099 | - $heightOrig = imagesy($this->resource); |
|
| 1100 | - if ($widthOrig === $heightOrig and $size == 0) { |
|
| 1101 | - return true; |
|
| 1102 | - } |
|
| 1103 | - $ratioOrig = $widthOrig / $heightOrig; |
|
| 1104 | - $width = $height = min($widthOrig, $heightOrig); |
|
| 1105 | - |
|
| 1106 | - if ($ratioOrig > 1) { |
|
| 1107 | - $x = ($widthOrig / 2) - ($width / 2); |
|
| 1108 | - $y = 0; |
|
| 1109 | - } else { |
|
| 1110 | - $y = ($heightOrig / 2) - ($height / 2); |
|
| 1111 | - $x = 0; |
|
| 1112 | - } |
|
| 1113 | - if ($size > 0) { |
|
| 1114 | - $targetWidth = $size; |
|
| 1115 | - $targetHeight = $size; |
|
| 1116 | - } else { |
|
| 1117 | - $targetWidth = $width; |
|
| 1118 | - $targetHeight = $height; |
|
| 1119 | - } |
|
| 1120 | - $process = imagecreatetruecolor($targetWidth, $targetHeight); |
|
| 1121 | - if ($process === false) { |
|
| 1122 | - $this->logger->debug('OC_Image->centerCrop, Error creating true color image', ['app' => 'core']); |
|
| 1123 | - return false; |
|
| 1124 | - } |
|
| 1125 | - |
|
| 1126 | - // preserve transparency |
|
| 1127 | - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1128 | - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1129 | - imagealphablending($process, false); |
|
| 1130 | - imagesavealpha($process, true); |
|
| 1131 | - } |
|
| 1132 | - |
|
| 1133 | - imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height); |
|
| 1134 | - if ($process === false) { |
|
| 1135 | - $this->logger->debug('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, ['app' => 'core']); |
|
| 1136 | - return false; |
|
| 1137 | - } |
|
| 1138 | - imagedestroy($this->resource); |
|
| 1139 | - $this->resource = $process; |
|
| 1140 | - return true; |
|
| 1141 | - } |
|
| 1142 | - |
|
| 1143 | - /** |
|
| 1144 | - * Crops the image from point $x$y with dimension $wx$h. |
|
| 1145 | - * |
|
| 1146 | - * @param int $x Horizontal position |
|
| 1147 | - * @param int $y Vertical position |
|
| 1148 | - * @param int $w Width |
|
| 1149 | - * @param int $h Height |
|
| 1150 | - * @return bool for success or failure |
|
| 1151 | - */ |
|
| 1152 | - public function crop(int $x, int $y, int $w, int $h): bool { |
|
| 1153 | - if (!$this->valid()) { |
|
| 1154 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1155 | - return false; |
|
| 1156 | - } |
|
| 1157 | - $result = $this->cropNew($x, $y, $w, $h); |
|
| 1158 | - imagedestroy($this->resource); |
|
| 1159 | - $this->resource = $result; |
|
| 1160 | - return $this->valid(); |
|
| 1161 | - } |
|
| 1162 | - |
|
| 1163 | - /** |
|
| 1164 | - * Crops the image from point $x$y with dimension $wx$h. |
|
| 1165 | - * |
|
| 1166 | - * @param int $x Horizontal position |
|
| 1167 | - * @param int $y Vertical position |
|
| 1168 | - * @param int $w Width |
|
| 1169 | - * @param int $h Height |
|
| 1170 | - * @return resource|\GdImage|false |
|
| 1171 | - */ |
|
| 1172 | - public function cropNew(int $x, int $y, int $w, int $h) { |
|
| 1173 | - if (!$this->valid()) { |
|
| 1174 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1175 | - return false; |
|
| 1176 | - } |
|
| 1177 | - $process = imagecreatetruecolor($w, $h); |
|
| 1178 | - if ($process === false) { |
|
| 1179 | - $this->logger->debug(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
|
| 1180 | - return false; |
|
| 1181 | - } |
|
| 1182 | - |
|
| 1183 | - // preserve transparency |
|
| 1184 | - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1185 | - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1186 | - imagealphablending($process, false); |
|
| 1187 | - imagesavealpha($process, true); |
|
| 1188 | - } |
|
| 1189 | - |
|
| 1190 | - imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h); |
|
| 1191 | - if ($process === false) { |
|
| 1192 | - $this->logger->debug(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, ['app' => 'core']); |
|
| 1193 | - return false; |
|
| 1194 | - } |
|
| 1195 | - return $process; |
|
| 1196 | - } |
|
| 1197 | - |
|
| 1198 | - /** |
|
| 1199 | - * Resizes the image to fit within a boundary while preserving ratio. |
|
| 1200 | - * |
|
| 1201 | - * Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up |
|
| 1202 | - * |
|
| 1203 | - * @param integer $maxWidth |
|
| 1204 | - * @param integer $maxHeight |
|
| 1205 | - * @return bool |
|
| 1206 | - */ |
|
| 1207 | - public function fitIn($maxWidth, $maxHeight) { |
|
| 1208 | - if (!$this->valid()) { |
|
| 1209 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1210 | - return false; |
|
| 1211 | - } |
|
| 1212 | - $widthOrig = imagesx($this->resource); |
|
| 1213 | - $heightOrig = imagesy($this->resource); |
|
| 1214 | - $ratio = $widthOrig / $heightOrig; |
|
| 1215 | - |
|
| 1216 | - $newWidth = min($maxWidth, $ratio * $maxHeight); |
|
| 1217 | - $newHeight = min($maxHeight, $maxWidth / $ratio); |
|
| 1218 | - |
|
| 1219 | - $this->preciseResize((int)round($newWidth), (int)round($newHeight)); |
|
| 1220 | - return true; |
|
| 1221 | - } |
|
| 1222 | - |
|
| 1223 | - /** |
|
| 1224 | - * Shrinks larger images to fit within specified boundaries while preserving ratio. |
|
| 1225 | - * |
|
| 1226 | - * @param integer $maxWidth |
|
| 1227 | - * @param integer $maxHeight |
|
| 1228 | - * @return bool |
|
| 1229 | - */ |
|
| 1230 | - public function scaleDownToFit($maxWidth, $maxHeight) { |
|
| 1231 | - if (!$this->valid()) { |
|
| 1232 | - $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1233 | - return false; |
|
| 1234 | - } |
|
| 1235 | - $widthOrig = imagesx($this->resource); |
|
| 1236 | - $heightOrig = imagesy($this->resource); |
|
| 1237 | - |
|
| 1238 | - if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) { |
|
| 1239 | - return $this->fitIn($maxWidth, $maxHeight); |
|
| 1240 | - } |
|
| 1241 | - |
|
| 1242 | - return false; |
|
| 1243 | - } |
|
| 1244 | - |
|
| 1245 | - public function copy(): IImage { |
|
| 1246 | - $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1247 | - $image->resource = imagecreatetruecolor($this->width(), $this->height()); |
|
| 1248 | - imagecopy( |
|
| 1249 | - $image->resource(), |
|
| 1250 | - $this->resource(), |
|
| 1251 | - 0, |
|
| 1252 | - 0, |
|
| 1253 | - 0, |
|
| 1254 | - 0, |
|
| 1255 | - $this->width(), |
|
| 1256 | - $this->height() |
|
| 1257 | - ); |
|
| 1258 | - |
|
| 1259 | - return $image; |
|
| 1260 | - } |
|
| 1261 | - |
|
| 1262 | - public function cropCopy(int $x, int $y, int $w, int $h): IImage { |
|
| 1263 | - $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1264 | - $image->imageType = $this->imageType; |
|
| 1265 | - $image->mimeType = $this->mimeType; |
|
| 1266 | - $image->bitDepth = $this->bitDepth; |
|
| 1267 | - $image->resource = $this->cropNew($x, $y, $w, $h); |
|
| 1268 | - |
|
| 1269 | - return $image; |
|
| 1270 | - } |
|
| 1271 | - |
|
| 1272 | - public function preciseResizeCopy(int $width, int $height): IImage { |
|
| 1273 | - $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1274 | - $image->imageType = $this->imageType; |
|
| 1275 | - $image->mimeType = $this->mimeType; |
|
| 1276 | - $image->bitDepth = $this->bitDepth; |
|
| 1277 | - $image->resource = $this->preciseResizeNew($width, $height); |
|
| 1278 | - |
|
| 1279 | - return $image; |
|
| 1280 | - } |
|
| 1281 | - |
|
| 1282 | - public function resizeCopy(int $maxSize): IImage { |
|
| 1283 | - $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1284 | - $image->imageType = $this->imageType; |
|
| 1285 | - $image->mimeType = $this->mimeType; |
|
| 1286 | - $image->bitDepth = $this->bitDepth; |
|
| 1287 | - $image->resource = $this->resizeNew($maxSize); |
|
| 1288 | - |
|
| 1289 | - return $image; |
|
| 1290 | - } |
|
| 1291 | - |
|
| 1292 | - /** |
|
| 1293 | - * Destroys the current image and resets the object |
|
| 1294 | - */ |
|
| 1295 | - public function destroy() { |
|
| 1296 | - if ($this->valid()) { |
|
| 1297 | - imagedestroy($this->resource); |
|
| 1298 | - } |
|
| 1299 | - $this->resource = false; |
|
| 1300 | - } |
|
| 1301 | - |
|
| 1302 | - public function __destruct() { |
|
| 1303 | - $this->destroy(); |
|
| 1304 | - } |
|
| 755 | + default: |
|
| 756 | + |
|
| 757 | + // this is mostly file created from encrypted file |
|
| 758 | + $data = file_get_contents($imagePath); |
|
| 759 | + if (!$this->checkImageDataSize($data)) { |
|
| 760 | + return false; |
|
| 761 | + } |
|
| 762 | + $this->resource = imagecreatefromstring($data); |
|
| 763 | + $iType = IMAGETYPE_PNG; |
|
| 764 | + $this->logger->debug('OC_Image->loadFromFile, Default', ['app' => 'core']); |
|
| 765 | + break; |
|
| 766 | + } |
|
| 767 | + if ($this->valid()) { |
|
| 768 | + $this->imageType = $iType; |
|
| 769 | + $this->mimeType = image_type_to_mime_type($iType); |
|
| 770 | + $this->filePath = $imagePath; |
|
| 771 | + } |
|
| 772 | + return $this->resource; |
|
| 773 | + } |
|
| 774 | + |
|
| 775 | + /** |
|
| 776 | + * Loads an image from a string of data. |
|
| 777 | + * |
|
| 778 | + * @param string $str A string of image data as read from a file. |
|
| 779 | + * @return bool|resource|\GdImage An image resource or false on error |
|
| 780 | + */ |
|
| 781 | + public function loadFromData($str) { |
|
| 782 | + if (!is_string($str)) { |
|
| 783 | + return false; |
|
| 784 | + } |
|
| 785 | + if (!$this->checkImageDataSize($str)) { |
|
| 786 | + return false; |
|
| 787 | + } |
|
| 788 | + $this->resource = @imagecreatefromstring($str); |
|
| 789 | + if ($this->fileInfo) { |
|
| 790 | + $this->mimeType = $this->fileInfo->buffer($str); |
|
| 791 | + } |
|
| 792 | + if ($this->valid()) { |
|
| 793 | + imagealphablending($this->resource, false); |
|
| 794 | + imagesavealpha($this->resource, true); |
|
| 795 | + } |
|
| 796 | + |
|
| 797 | + if (!$this->resource) { |
|
| 798 | + $this->logger->debug('OC_Image->loadFromFile, could not load', ['app' => 'core']); |
|
| 799 | + return false; |
|
| 800 | + } |
|
| 801 | + return $this->resource; |
|
| 802 | + } |
|
| 803 | + |
|
| 804 | + /** |
|
| 805 | + * Loads an image from a base64 encoded string. |
|
| 806 | + * |
|
| 807 | + * @param string $str A string base64 encoded string of image data. |
|
| 808 | + * @return bool|resource|\GdImage An image resource or false on error |
|
| 809 | + */ |
|
| 810 | + public function loadFromBase64($str) { |
|
| 811 | + if (!is_string($str)) { |
|
| 812 | + return false; |
|
| 813 | + } |
|
| 814 | + $data = base64_decode($str); |
|
| 815 | + if ($data) { // try to load from string data |
|
| 816 | + if (!$this->checkImageDataSize($data)) { |
|
| 817 | + return false; |
|
| 818 | + } |
|
| 819 | + $this->resource = @imagecreatefromstring($data); |
|
| 820 | + if ($this->fileInfo) { |
|
| 821 | + $this->mimeType = $this->fileInfo->buffer($data); |
|
| 822 | + } |
|
| 823 | + if (!$this->resource) { |
|
| 824 | + $this->logger->debug('OC_Image->loadFromBase64, could not load', ['app' => 'core']); |
|
| 825 | + return false; |
|
| 826 | + } |
|
| 827 | + return $this->resource; |
|
| 828 | + } else { |
|
| 829 | + return false; |
|
| 830 | + } |
|
| 831 | + } |
|
| 832 | + |
|
| 833 | + /** |
|
| 834 | + * Create a new image from file or URL |
|
| 835 | + * |
|
| 836 | + * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm |
|
| 837 | + * @version 1.00 |
|
| 838 | + * @param string $fileName <p> |
|
| 839 | + * Path to the BMP image. |
|
| 840 | + * </p> |
|
| 841 | + * @return bool|resource|\GdImage an image resource identifier on success, <b>FALSE</b> on errors. |
|
| 842 | + */ |
|
| 843 | + private function imagecreatefrombmp($fileName) { |
|
| 844 | + if (!($fh = fopen($fileName, 'rb'))) { |
|
| 845 | + $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, ['app' => 'core']); |
|
| 846 | + return false; |
|
| 847 | + } |
|
| 848 | + // read file header |
|
| 849 | + $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14)); |
|
| 850 | + // check for bitmap |
|
| 851 | + if ($meta['type'] != 19778) { |
|
| 852 | + fclose($fh); |
|
| 853 | + $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
|
| 854 | + return false; |
|
| 855 | + } |
|
| 856 | + // read image header |
|
| 857 | + $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40)); |
|
| 858 | + // read additional 16bit header |
|
| 859 | + if ($meta['bits'] == 16) { |
|
| 860 | + $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12)); |
|
| 861 | + } |
|
| 862 | + // set bytes and padding |
|
| 863 | + $meta['bytes'] = $meta['bits'] / 8; |
|
| 864 | + $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call |
|
| 865 | + $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4))); |
|
| 866 | + if ($meta['decal'] == 4) { |
|
| 867 | + $meta['decal'] = 0; |
|
| 868 | + } |
|
| 869 | + // obtain imagesize |
|
| 870 | + if ($meta['imagesize'] < 1) { |
|
| 871 | + $meta['imagesize'] = $meta['filesize'] - $meta['offset']; |
|
| 872 | + // in rare cases filesize is equal to offset so we need to read physical size |
|
| 873 | + if ($meta['imagesize'] < 1) { |
|
| 874 | + $meta['imagesize'] = @filesize($fileName) - $meta['offset']; |
|
| 875 | + if ($meta['imagesize'] < 1) { |
|
| 876 | + fclose($fh); |
|
| 877 | + $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
|
| 878 | + return false; |
|
| 879 | + } |
|
| 880 | + } |
|
| 881 | + } |
|
| 882 | + // calculate colors |
|
| 883 | + $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors']; |
|
| 884 | + // read color palette |
|
| 885 | + $palette = []; |
|
| 886 | + if ($meta['bits'] < 16) { |
|
| 887 | + $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4)); |
|
| 888 | + // in rare cases the color value is signed |
|
| 889 | + if ($palette[1] < 0) { |
|
| 890 | + foreach ($palette as $i => $color) { |
|
| 891 | + $palette[$i] = $color + 16777216; |
|
| 892 | + } |
|
| 893 | + } |
|
| 894 | + } |
|
| 895 | + if (!$this->checkImageMemory($meta['width'], $meta['height'])) { |
|
| 896 | + fclose($fh); |
|
| 897 | + return false; |
|
| 898 | + } |
|
| 899 | + // create gd image |
|
| 900 | + $im = imagecreatetruecolor($meta['width'], $meta['height']); |
|
| 901 | + if ($im == false) { |
|
| 902 | + fclose($fh); |
|
| 903 | + $this->logger->warning( |
|
| 904 | + 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'], |
|
| 905 | + ['app' => 'core']); |
|
| 906 | + return false; |
|
| 907 | + } |
|
| 908 | + |
|
| 909 | + $data = fread($fh, $meta['imagesize']); |
|
| 910 | + $p = 0; |
|
| 911 | + $vide = chr(0); |
|
| 912 | + $y = $meta['height'] - 1; |
|
| 913 | + $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!'; |
|
| 914 | + // loop through the image data beginning with the lower left corner |
|
| 915 | + while ($y >= 0) { |
|
| 916 | + $x = 0; |
|
| 917 | + while ($x < $meta['width']) { |
|
| 918 | + switch ($meta['bits']) { |
|
| 919 | + case 32: |
|
| 920 | + case 24: |
|
| 921 | + if (!($part = substr($data, $p, 3))) { |
|
| 922 | + $this->logger->warning($error, ['app' => 'core']); |
|
| 923 | + return $im; |
|
| 924 | + } |
|
| 925 | + $color = @unpack('V', $part . $vide); |
|
| 926 | + break; |
|
| 927 | + case 16: |
|
| 928 | + if (!($part = substr($data, $p, 2))) { |
|
| 929 | + fclose($fh); |
|
| 930 | + $this->logger->warning($error, ['app' => 'core']); |
|
| 931 | + return $im; |
|
| 932 | + } |
|
| 933 | + $color = @unpack('v', $part); |
|
| 934 | + $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3); |
|
| 935 | + break; |
|
| 936 | + case 8: |
|
| 937 | + $color = @unpack('n', $vide . ($data[$p] ?? '')); |
|
| 938 | + $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 939 | + break; |
|
| 940 | + case 4: |
|
| 941 | + $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
| 942 | + $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F; |
|
| 943 | + $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 944 | + break; |
|
| 945 | + case 1: |
|
| 946 | + $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
| 947 | + switch (($p * 8) % 8) { |
|
| 948 | + case 0: |
|
| 949 | + $color[1] = $color[1] >> 7; |
|
| 950 | + break; |
|
| 951 | + case 1: |
|
| 952 | + $color[1] = ($color[1] & 0x40) >> 6; |
|
| 953 | + break; |
|
| 954 | + case 2: |
|
| 955 | + $color[1] = ($color[1] & 0x20) >> 5; |
|
| 956 | + break; |
|
| 957 | + case 3: |
|
| 958 | + $color[1] = ($color[1] & 0x10) >> 4; |
|
| 959 | + break; |
|
| 960 | + case 4: |
|
| 961 | + $color[1] = ($color[1] & 0x8) >> 3; |
|
| 962 | + break; |
|
| 963 | + case 5: |
|
| 964 | + $color[1] = ($color[1] & 0x4) >> 2; |
|
| 965 | + break; |
|
| 966 | + case 6: |
|
| 967 | + $color[1] = ($color[1] & 0x2) >> 1; |
|
| 968 | + break; |
|
| 969 | + case 7: |
|
| 970 | + $color[1] = ($color[1] & 0x1); |
|
| 971 | + break; |
|
| 972 | + } |
|
| 973 | + $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
| 974 | + break; |
|
| 975 | + default: |
|
| 976 | + fclose($fh); |
|
| 977 | + $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', ['app' => 'core']); |
|
| 978 | + return false; |
|
| 979 | + } |
|
| 980 | + imagesetpixel($im, $x, $y, $color[1]); |
|
| 981 | + $x++; |
|
| 982 | + $p += $meta['bytes']; |
|
| 983 | + } |
|
| 984 | + $y--; |
|
| 985 | + $p += $meta['decal']; |
|
| 986 | + } |
|
| 987 | + fclose($fh); |
|
| 988 | + return $im; |
|
| 989 | + } |
|
| 990 | + |
|
| 991 | + /** |
|
| 992 | + * Resizes the image preserving ratio. |
|
| 993 | + * |
|
| 994 | + * @param integer $maxSize The maximum size of either the width or height. |
|
| 995 | + * @return bool |
|
| 996 | + */ |
|
| 997 | + public function resize($maxSize) { |
|
| 998 | + if (!$this->valid()) { |
|
| 999 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1000 | + return false; |
|
| 1001 | + } |
|
| 1002 | + $result = $this->resizeNew($maxSize); |
|
| 1003 | + imagedestroy($this->resource); |
|
| 1004 | + $this->resource = $result; |
|
| 1005 | + return $this->valid(); |
|
| 1006 | + } |
|
| 1007 | + |
|
| 1008 | + /** |
|
| 1009 | + * @param $maxSize |
|
| 1010 | + * @return resource|bool|\GdImage |
|
| 1011 | + */ |
|
| 1012 | + private function resizeNew($maxSize) { |
|
| 1013 | + if (!$this->valid()) { |
|
| 1014 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1015 | + return false; |
|
| 1016 | + } |
|
| 1017 | + $widthOrig = imagesx($this->resource); |
|
| 1018 | + $heightOrig = imagesy($this->resource); |
|
| 1019 | + $ratioOrig = $widthOrig / $heightOrig; |
|
| 1020 | + |
|
| 1021 | + if ($ratioOrig > 1) { |
|
| 1022 | + $newHeight = round($maxSize / $ratioOrig); |
|
| 1023 | + $newWidth = $maxSize; |
|
| 1024 | + } else { |
|
| 1025 | + $newWidth = round($maxSize * $ratioOrig); |
|
| 1026 | + $newHeight = $maxSize; |
|
| 1027 | + } |
|
| 1028 | + |
|
| 1029 | + return $this->preciseResizeNew((int)round($newWidth), (int)round($newHeight)); |
|
| 1030 | + } |
|
| 1031 | + |
|
| 1032 | + /** |
|
| 1033 | + * @param int $width |
|
| 1034 | + * @param int $height |
|
| 1035 | + * @return bool |
|
| 1036 | + */ |
|
| 1037 | + public function preciseResize(int $width, int $height): bool { |
|
| 1038 | + if (!$this->valid()) { |
|
| 1039 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1040 | + return false; |
|
| 1041 | + } |
|
| 1042 | + $result = $this->preciseResizeNew($width, $height); |
|
| 1043 | + imagedestroy($this->resource); |
|
| 1044 | + $this->resource = $result; |
|
| 1045 | + return $this->valid(); |
|
| 1046 | + } |
|
| 1047 | + |
|
| 1048 | + |
|
| 1049 | + /** |
|
| 1050 | + * @param int $width |
|
| 1051 | + * @param int $height |
|
| 1052 | + * @return resource|bool|\GdImage |
|
| 1053 | + */ |
|
| 1054 | + public function preciseResizeNew(int $width, int $height) { |
|
| 1055 | + if (!($width > 0) || !($height > 0)) { |
|
| 1056 | + $this->logger->info(__METHOD__ . '(): Requested image size not bigger than 0', ['app' => 'core']); |
|
| 1057 | + return false; |
|
| 1058 | + } |
|
| 1059 | + if (!$this->valid()) { |
|
| 1060 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1061 | + return false; |
|
| 1062 | + } |
|
| 1063 | + $widthOrig = imagesx($this->resource); |
|
| 1064 | + $heightOrig = imagesy($this->resource); |
|
| 1065 | + $process = imagecreatetruecolor($width, $height); |
|
| 1066 | + if ($process === false) { |
|
| 1067 | + $this->logger->debug(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
|
| 1068 | + return false; |
|
| 1069 | + } |
|
| 1070 | + |
|
| 1071 | + // preserve transparency |
|
| 1072 | + if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1073 | + imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1074 | + imagealphablending($process, false); |
|
| 1075 | + imagesavealpha($process, true); |
|
| 1076 | + } |
|
| 1077 | + |
|
| 1078 | + $res = imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig); |
|
| 1079 | + if ($res === false) { |
|
| 1080 | + $this->logger->debug(__METHOD__ . '(): Error re-sampling process image', ['app' => 'core']); |
|
| 1081 | + imagedestroy($process); |
|
| 1082 | + return false; |
|
| 1083 | + } |
|
| 1084 | + return $process; |
|
| 1085 | + } |
|
| 1086 | + |
|
| 1087 | + /** |
|
| 1088 | + * Crops the image to the middle square. If the image is already square it just returns. |
|
| 1089 | + * |
|
| 1090 | + * @param int $size maximum size for the result (optional) |
|
| 1091 | + * @return bool for success or failure |
|
| 1092 | + */ |
|
| 1093 | + public function centerCrop($size = 0) { |
|
| 1094 | + if (!$this->valid()) { |
|
| 1095 | + $this->logger->debug('OC_Image->centerCrop, No image loaded', ['app' => 'core']); |
|
| 1096 | + return false; |
|
| 1097 | + } |
|
| 1098 | + $widthOrig = imagesx($this->resource); |
|
| 1099 | + $heightOrig = imagesy($this->resource); |
|
| 1100 | + if ($widthOrig === $heightOrig and $size == 0) { |
|
| 1101 | + return true; |
|
| 1102 | + } |
|
| 1103 | + $ratioOrig = $widthOrig / $heightOrig; |
|
| 1104 | + $width = $height = min($widthOrig, $heightOrig); |
|
| 1105 | + |
|
| 1106 | + if ($ratioOrig > 1) { |
|
| 1107 | + $x = ($widthOrig / 2) - ($width / 2); |
|
| 1108 | + $y = 0; |
|
| 1109 | + } else { |
|
| 1110 | + $y = ($heightOrig / 2) - ($height / 2); |
|
| 1111 | + $x = 0; |
|
| 1112 | + } |
|
| 1113 | + if ($size > 0) { |
|
| 1114 | + $targetWidth = $size; |
|
| 1115 | + $targetHeight = $size; |
|
| 1116 | + } else { |
|
| 1117 | + $targetWidth = $width; |
|
| 1118 | + $targetHeight = $height; |
|
| 1119 | + } |
|
| 1120 | + $process = imagecreatetruecolor($targetWidth, $targetHeight); |
|
| 1121 | + if ($process === false) { |
|
| 1122 | + $this->logger->debug('OC_Image->centerCrop, Error creating true color image', ['app' => 'core']); |
|
| 1123 | + return false; |
|
| 1124 | + } |
|
| 1125 | + |
|
| 1126 | + // preserve transparency |
|
| 1127 | + if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1128 | + imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1129 | + imagealphablending($process, false); |
|
| 1130 | + imagesavealpha($process, true); |
|
| 1131 | + } |
|
| 1132 | + |
|
| 1133 | + imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height); |
|
| 1134 | + if ($process === false) { |
|
| 1135 | + $this->logger->debug('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, ['app' => 'core']); |
|
| 1136 | + return false; |
|
| 1137 | + } |
|
| 1138 | + imagedestroy($this->resource); |
|
| 1139 | + $this->resource = $process; |
|
| 1140 | + return true; |
|
| 1141 | + } |
|
| 1142 | + |
|
| 1143 | + /** |
|
| 1144 | + * Crops the image from point $x$y with dimension $wx$h. |
|
| 1145 | + * |
|
| 1146 | + * @param int $x Horizontal position |
|
| 1147 | + * @param int $y Vertical position |
|
| 1148 | + * @param int $w Width |
|
| 1149 | + * @param int $h Height |
|
| 1150 | + * @return bool for success or failure |
|
| 1151 | + */ |
|
| 1152 | + public function crop(int $x, int $y, int $w, int $h): bool { |
|
| 1153 | + if (!$this->valid()) { |
|
| 1154 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1155 | + return false; |
|
| 1156 | + } |
|
| 1157 | + $result = $this->cropNew($x, $y, $w, $h); |
|
| 1158 | + imagedestroy($this->resource); |
|
| 1159 | + $this->resource = $result; |
|
| 1160 | + return $this->valid(); |
|
| 1161 | + } |
|
| 1162 | + |
|
| 1163 | + /** |
|
| 1164 | + * Crops the image from point $x$y with dimension $wx$h. |
|
| 1165 | + * |
|
| 1166 | + * @param int $x Horizontal position |
|
| 1167 | + * @param int $y Vertical position |
|
| 1168 | + * @param int $w Width |
|
| 1169 | + * @param int $h Height |
|
| 1170 | + * @return resource|\GdImage|false |
|
| 1171 | + */ |
|
| 1172 | + public function cropNew(int $x, int $y, int $w, int $h) { |
|
| 1173 | + if (!$this->valid()) { |
|
| 1174 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1175 | + return false; |
|
| 1176 | + } |
|
| 1177 | + $process = imagecreatetruecolor($w, $h); |
|
| 1178 | + if ($process === false) { |
|
| 1179 | + $this->logger->debug(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
|
| 1180 | + return false; |
|
| 1181 | + } |
|
| 1182 | + |
|
| 1183 | + // preserve transparency |
|
| 1184 | + if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
| 1185 | + imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
| 1186 | + imagealphablending($process, false); |
|
| 1187 | + imagesavealpha($process, true); |
|
| 1188 | + } |
|
| 1189 | + |
|
| 1190 | + imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h); |
|
| 1191 | + if ($process === false) { |
|
| 1192 | + $this->logger->debug(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, ['app' => 'core']); |
|
| 1193 | + return false; |
|
| 1194 | + } |
|
| 1195 | + return $process; |
|
| 1196 | + } |
|
| 1197 | + |
|
| 1198 | + /** |
|
| 1199 | + * Resizes the image to fit within a boundary while preserving ratio. |
|
| 1200 | + * |
|
| 1201 | + * Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up |
|
| 1202 | + * |
|
| 1203 | + * @param integer $maxWidth |
|
| 1204 | + * @param integer $maxHeight |
|
| 1205 | + * @return bool |
|
| 1206 | + */ |
|
| 1207 | + public function fitIn($maxWidth, $maxHeight) { |
|
| 1208 | + if (!$this->valid()) { |
|
| 1209 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1210 | + return false; |
|
| 1211 | + } |
|
| 1212 | + $widthOrig = imagesx($this->resource); |
|
| 1213 | + $heightOrig = imagesy($this->resource); |
|
| 1214 | + $ratio = $widthOrig / $heightOrig; |
|
| 1215 | + |
|
| 1216 | + $newWidth = min($maxWidth, $ratio * $maxHeight); |
|
| 1217 | + $newHeight = min($maxHeight, $maxWidth / $ratio); |
|
| 1218 | + |
|
| 1219 | + $this->preciseResize((int)round($newWidth), (int)round($newHeight)); |
|
| 1220 | + return true; |
|
| 1221 | + } |
|
| 1222 | + |
|
| 1223 | + /** |
|
| 1224 | + * Shrinks larger images to fit within specified boundaries while preserving ratio. |
|
| 1225 | + * |
|
| 1226 | + * @param integer $maxWidth |
|
| 1227 | + * @param integer $maxHeight |
|
| 1228 | + * @return bool |
|
| 1229 | + */ |
|
| 1230 | + public function scaleDownToFit($maxWidth, $maxHeight) { |
|
| 1231 | + if (!$this->valid()) { |
|
| 1232 | + $this->logger->debug(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
|
| 1233 | + return false; |
|
| 1234 | + } |
|
| 1235 | + $widthOrig = imagesx($this->resource); |
|
| 1236 | + $heightOrig = imagesy($this->resource); |
|
| 1237 | + |
|
| 1238 | + if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) { |
|
| 1239 | + return $this->fitIn($maxWidth, $maxHeight); |
|
| 1240 | + } |
|
| 1241 | + |
|
| 1242 | + return false; |
|
| 1243 | + } |
|
| 1244 | + |
|
| 1245 | + public function copy(): IImage { |
|
| 1246 | + $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1247 | + $image->resource = imagecreatetruecolor($this->width(), $this->height()); |
|
| 1248 | + imagecopy( |
|
| 1249 | + $image->resource(), |
|
| 1250 | + $this->resource(), |
|
| 1251 | + 0, |
|
| 1252 | + 0, |
|
| 1253 | + 0, |
|
| 1254 | + 0, |
|
| 1255 | + $this->width(), |
|
| 1256 | + $this->height() |
|
| 1257 | + ); |
|
| 1258 | + |
|
| 1259 | + return $image; |
|
| 1260 | + } |
|
| 1261 | + |
|
| 1262 | + public function cropCopy(int $x, int $y, int $w, int $h): IImage { |
|
| 1263 | + $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1264 | + $image->imageType = $this->imageType; |
|
| 1265 | + $image->mimeType = $this->mimeType; |
|
| 1266 | + $image->bitDepth = $this->bitDepth; |
|
| 1267 | + $image->resource = $this->cropNew($x, $y, $w, $h); |
|
| 1268 | + |
|
| 1269 | + return $image; |
|
| 1270 | + } |
|
| 1271 | + |
|
| 1272 | + public function preciseResizeCopy(int $width, int $height): IImage { |
|
| 1273 | + $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1274 | + $image->imageType = $this->imageType; |
|
| 1275 | + $image->mimeType = $this->mimeType; |
|
| 1276 | + $image->bitDepth = $this->bitDepth; |
|
| 1277 | + $image->resource = $this->preciseResizeNew($width, $height); |
|
| 1278 | + |
|
| 1279 | + return $image; |
|
| 1280 | + } |
|
| 1281 | + |
|
| 1282 | + public function resizeCopy(int $maxSize): IImage { |
|
| 1283 | + $image = new OC_Image(null, $this->logger, $this->config); |
|
| 1284 | + $image->imageType = $this->imageType; |
|
| 1285 | + $image->mimeType = $this->mimeType; |
|
| 1286 | + $image->bitDepth = $this->bitDepth; |
|
| 1287 | + $image->resource = $this->resizeNew($maxSize); |
|
| 1288 | + |
|
| 1289 | + return $image; |
|
| 1290 | + } |
|
| 1291 | + |
|
| 1292 | + /** |
|
| 1293 | + * Destroys the current image and resets the object |
|
| 1294 | + */ |
|
| 1295 | + public function destroy() { |
|
| 1296 | + if ($this->valid()) { |
|
| 1297 | + imagedestroy($this->resource); |
|
| 1298 | + } |
|
| 1299 | + $this->resource = false; |
|
| 1300 | + } |
|
| 1301 | + |
|
| 1302 | + public function __destruct() { |
|
| 1303 | + $this->destroy(); |
|
| 1304 | + } |
|
| 1305 | 1305 | } |
| 1306 | 1306 | |
| 1307 | 1307 | if (!function_exists('imagebmp')) { |
| 1308 | - /** |
|
| 1309 | - * Output a BMP image to either the browser or a file |
|
| 1310 | - * |
|
| 1311 | - * @link http://www.ugia.cn/wp-data/imagebmp.php |
|
| 1312 | - * @author legend <[email protected]> |
|
| 1313 | - * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm |
|
| 1314 | - * @author mgutt <[email protected]> |
|
| 1315 | - * @version 1.00 |
|
| 1316 | - * @param resource|\GdImage $im |
|
| 1317 | - * @param string $fileName [optional] <p>The path to save the file to.</p> |
|
| 1318 | - * @param int $bit [optional] <p>Bit depth, (default is 24).</p> |
|
| 1319 | - * @param int $compression [optional] |
|
| 1320 | - * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
|
| 1321 | - */ |
|
| 1322 | - function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) { |
|
| 1323 | - if (!in_array($bit, [1, 4, 8, 16, 24, 32])) { |
|
| 1324 | - $bit = 24; |
|
| 1325 | - } elseif ($bit == 32) { |
|
| 1326 | - $bit = 24; |
|
| 1327 | - } |
|
| 1328 | - $bits = (int)pow(2, $bit); |
|
| 1329 | - imagetruecolortopalette($im, true, $bits); |
|
| 1330 | - $width = imagesx($im); |
|
| 1331 | - $height = imagesy($im); |
|
| 1332 | - $colorsNum = imagecolorstotal($im); |
|
| 1333 | - $rgbQuad = ''; |
|
| 1334 | - if ($bit <= 8) { |
|
| 1335 | - for ($i = 0; $i < $colorsNum; $i++) { |
|
| 1336 | - $colors = imagecolorsforindex($im, $i); |
|
| 1337 | - $rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0"; |
|
| 1338 | - } |
|
| 1339 | - $bmpData = ''; |
|
| 1340 | - if ($compression == 0 || $bit < 8) { |
|
| 1341 | - $compression = 0; |
|
| 1342 | - $extra = ''; |
|
| 1343 | - $padding = 4 - ceil($width / (8 / $bit)) % 4; |
|
| 1344 | - if ($padding % 4 != 0) { |
|
| 1345 | - $extra = str_repeat("\0", $padding); |
|
| 1346 | - } |
|
| 1347 | - for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1348 | - $i = 0; |
|
| 1349 | - while ($i < $width) { |
|
| 1350 | - $bin = 0; |
|
| 1351 | - $limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0; |
|
| 1352 | - for ($k = 8 - $bit; $k >= $limit; $k -= $bit) { |
|
| 1353 | - $index = imagecolorat($im, $i, $j); |
|
| 1354 | - $bin |= $index << $k; |
|
| 1355 | - $i++; |
|
| 1356 | - } |
|
| 1357 | - $bmpData .= chr($bin); |
|
| 1358 | - } |
|
| 1359 | - $bmpData .= $extra; |
|
| 1360 | - } |
|
| 1361 | - } // RLE8 |
|
| 1362 | - elseif ($compression == 1 && $bit == 8) { |
|
| 1363 | - for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1364 | - $lastIndex = null; |
|
| 1365 | - $sameNum = 0; |
|
| 1366 | - for ($i = 0; $i <= $width; $i++) { |
|
| 1367 | - $index = imagecolorat($im, $i, $j); |
|
| 1368 | - if ($index !== $lastIndex || $sameNum > 255) { |
|
| 1369 | - if ($sameNum != 0) { |
|
| 1370 | - $bmpData .= chr($sameNum) . chr($lastIndex); |
|
| 1371 | - } |
|
| 1372 | - $lastIndex = $index; |
|
| 1373 | - $sameNum = 1; |
|
| 1374 | - } else { |
|
| 1375 | - $sameNum++; |
|
| 1376 | - } |
|
| 1377 | - } |
|
| 1378 | - $bmpData .= "\0\0"; |
|
| 1379 | - } |
|
| 1380 | - $bmpData .= "\0\1"; |
|
| 1381 | - } |
|
| 1382 | - $sizeQuad = strlen($rgbQuad); |
|
| 1383 | - $sizeData = strlen($bmpData); |
|
| 1384 | - } else { |
|
| 1385 | - $extra = ''; |
|
| 1386 | - $padding = 4 - ($width * ($bit / 8)) % 4; |
|
| 1387 | - if ($padding % 4 != 0) { |
|
| 1388 | - $extra = str_repeat("\0", $padding); |
|
| 1389 | - } |
|
| 1390 | - $bmpData = ''; |
|
| 1391 | - for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1392 | - for ($i = 0; $i < $width; $i++) { |
|
| 1393 | - $index = imagecolorat($im, $i, $j); |
|
| 1394 | - $colors = imagecolorsforindex($im, $index); |
|
| 1395 | - if ($bit == 16) { |
|
| 1396 | - $bin = 0 << $bit; |
|
| 1397 | - $bin |= ($colors['red'] >> 3) << 10; |
|
| 1398 | - $bin |= ($colors['green'] >> 3) << 5; |
|
| 1399 | - $bin |= $colors['blue'] >> 3; |
|
| 1400 | - $bmpData .= pack("v", $bin); |
|
| 1401 | - } else { |
|
| 1402 | - $bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']); |
|
| 1403 | - } |
|
| 1404 | - } |
|
| 1405 | - $bmpData .= $extra; |
|
| 1406 | - } |
|
| 1407 | - $sizeQuad = 0; |
|
| 1408 | - $sizeData = strlen($bmpData); |
|
| 1409 | - $colorsNum = 0; |
|
| 1410 | - } |
|
| 1411 | - $fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad); |
|
| 1412 | - $infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0); |
|
| 1413 | - if ($fileName != '') { |
|
| 1414 | - $fp = fopen($fileName, 'wb'); |
|
| 1415 | - fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData); |
|
| 1416 | - fclose($fp); |
|
| 1417 | - return true; |
|
| 1418 | - } |
|
| 1419 | - echo $fileHeader . $infoHeader . $rgbQuad . $bmpData; |
|
| 1420 | - return true; |
|
| 1421 | - } |
|
| 1308 | + /** |
|
| 1309 | + * Output a BMP image to either the browser or a file |
|
| 1310 | + * |
|
| 1311 | + * @link http://www.ugia.cn/wp-data/imagebmp.php |
|
| 1312 | + * @author legend <[email protected]> |
|
| 1313 | + * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm |
|
| 1314 | + * @author mgutt <[email protected]> |
|
| 1315 | + * @version 1.00 |
|
| 1316 | + * @param resource|\GdImage $im |
|
| 1317 | + * @param string $fileName [optional] <p>The path to save the file to.</p> |
|
| 1318 | + * @param int $bit [optional] <p>Bit depth, (default is 24).</p> |
|
| 1319 | + * @param int $compression [optional] |
|
| 1320 | + * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
|
| 1321 | + */ |
|
| 1322 | + function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) { |
|
| 1323 | + if (!in_array($bit, [1, 4, 8, 16, 24, 32])) { |
|
| 1324 | + $bit = 24; |
|
| 1325 | + } elseif ($bit == 32) { |
|
| 1326 | + $bit = 24; |
|
| 1327 | + } |
|
| 1328 | + $bits = (int)pow(2, $bit); |
|
| 1329 | + imagetruecolortopalette($im, true, $bits); |
|
| 1330 | + $width = imagesx($im); |
|
| 1331 | + $height = imagesy($im); |
|
| 1332 | + $colorsNum = imagecolorstotal($im); |
|
| 1333 | + $rgbQuad = ''; |
|
| 1334 | + if ($bit <= 8) { |
|
| 1335 | + for ($i = 0; $i < $colorsNum; $i++) { |
|
| 1336 | + $colors = imagecolorsforindex($im, $i); |
|
| 1337 | + $rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0"; |
|
| 1338 | + } |
|
| 1339 | + $bmpData = ''; |
|
| 1340 | + if ($compression == 0 || $bit < 8) { |
|
| 1341 | + $compression = 0; |
|
| 1342 | + $extra = ''; |
|
| 1343 | + $padding = 4 - ceil($width / (8 / $bit)) % 4; |
|
| 1344 | + if ($padding % 4 != 0) { |
|
| 1345 | + $extra = str_repeat("\0", $padding); |
|
| 1346 | + } |
|
| 1347 | + for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1348 | + $i = 0; |
|
| 1349 | + while ($i < $width) { |
|
| 1350 | + $bin = 0; |
|
| 1351 | + $limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0; |
|
| 1352 | + for ($k = 8 - $bit; $k >= $limit; $k -= $bit) { |
|
| 1353 | + $index = imagecolorat($im, $i, $j); |
|
| 1354 | + $bin |= $index << $k; |
|
| 1355 | + $i++; |
|
| 1356 | + } |
|
| 1357 | + $bmpData .= chr($bin); |
|
| 1358 | + } |
|
| 1359 | + $bmpData .= $extra; |
|
| 1360 | + } |
|
| 1361 | + } // RLE8 |
|
| 1362 | + elseif ($compression == 1 && $bit == 8) { |
|
| 1363 | + for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1364 | + $lastIndex = null; |
|
| 1365 | + $sameNum = 0; |
|
| 1366 | + for ($i = 0; $i <= $width; $i++) { |
|
| 1367 | + $index = imagecolorat($im, $i, $j); |
|
| 1368 | + if ($index !== $lastIndex || $sameNum > 255) { |
|
| 1369 | + if ($sameNum != 0) { |
|
| 1370 | + $bmpData .= chr($sameNum) . chr($lastIndex); |
|
| 1371 | + } |
|
| 1372 | + $lastIndex = $index; |
|
| 1373 | + $sameNum = 1; |
|
| 1374 | + } else { |
|
| 1375 | + $sameNum++; |
|
| 1376 | + } |
|
| 1377 | + } |
|
| 1378 | + $bmpData .= "\0\0"; |
|
| 1379 | + } |
|
| 1380 | + $bmpData .= "\0\1"; |
|
| 1381 | + } |
|
| 1382 | + $sizeQuad = strlen($rgbQuad); |
|
| 1383 | + $sizeData = strlen($bmpData); |
|
| 1384 | + } else { |
|
| 1385 | + $extra = ''; |
|
| 1386 | + $padding = 4 - ($width * ($bit / 8)) % 4; |
|
| 1387 | + if ($padding % 4 != 0) { |
|
| 1388 | + $extra = str_repeat("\0", $padding); |
|
| 1389 | + } |
|
| 1390 | + $bmpData = ''; |
|
| 1391 | + for ($j = $height - 1; $j >= 0; $j--) { |
|
| 1392 | + for ($i = 0; $i < $width; $i++) { |
|
| 1393 | + $index = imagecolorat($im, $i, $j); |
|
| 1394 | + $colors = imagecolorsforindex($im, $index); |
|
| 1395 | + if ($bit == 16) { |
|
| 1396 | + $bin = 0 << $bit; |
|
| 1397 | + $bin |= ($colors['red'] >> 3) << 10; |
|
| 1398 | + $bin |= ($colors['green'] >> 3) << 5; |
|
| 1399 | + $bin |= $colors['blue'] >> 3; |
|
| 1400 | + $bmpData .= pack("v", $bin); |
|
| 1401 | + } else { |
|
| 1402 | + $bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']); |
|
| 1403 | + } |
|
| 1404 | + } |
|
| 1405 | + $bmpData .= $extra; |
|
| 1406 | + } |
|
| 1407 | + $sizeQuad = 0; |
|
| 1408 | + $sizeData = strlen($bmpData); |
|
| 1409 | + $colorsNum = 0; |
|
| 1410 | + } |
|
| 1411 | + $fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad); |
|
| 1412 | + $infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0); |
|
| 1413 | + if ($fileName != '') { |
|
| 1414 | + $fp = fopen($fileName, 'wb'); |
|
| 1415 | + fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData); |
|
| 1416 | + fclose($fp); |
|
| 1417 | + return true; |
|
| 1418 | + } |
|
| 1419 | + echo $fileHeader . $infoHeader . $rgbQuad . $bmpData; |
|
| 1420 | + return true; |
|
| 1421 | + } |
|
| 1422 | 1422 | } |
| 1423 | 1423 | |
| 1424 | 1424 | if (!function_exists('exif_imagetype')) { |
| 1425 | - /** |
|
| 1426 | - * Workaround if exif_imagetype does not exist |
|
| 1427 | - * |
|
| 1428 | - * @link https://www.php.net/manual/en/function.exif-imagetype.php#80383 |
|
| 1429 | - * @param string $fileName |
|
| 1430 | - * @return string|boolean |
|
| 1431 | - */ |
|
| 1432 | - function exif_imagetype($fileName) { |
|
| 1433 | - if (($info = getimagesize($fileName)) !== false) { |
|
| 1434 | - return $info[2]; |
|
| 1435 | - } |
|
| 1436 | - return false; |
|
| 1437 | - } |
|
| 1425 | + /** |
|
| 1426 | + * Workaround if exif_imagetype does not exist |
|
| 1427 | + * |
|
| 1428 | + * @link https://www.php.net/manual/en/function.exif-imagetype.php#80383 |
|
| 1429 | + * @param string $fileName |
|
| 1430 | + * @return string|boolean |
|
| 1431 | + */ |
|
| 1432 | + function exif_imagetype($fileName) { |
|
| 1433 | + if (($info = getimagesize($fileName)) !== false) { |
|
| 1434 | + return $info[2]; |
|
| 1435 | + } |
|
| 1436 | + return false; |
|
| 1437 | + } |
|
| 1438 | 1438 | } |
