433 lines
13 KiB
PHP
433 lines
13 KiB
PHP
<?php
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namespace App\Services;
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use App\Album;
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use App\AlbumSources\IAlbumSource;
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use App\Helpers\FileHelper;
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use App\Helpers\ImageHelper;
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use App\Helpers\MiscHelper;
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use App\Helpers\ThemeHelper;
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use App\Photo;
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use Symfony\Component\HttpFoundation\File\File;
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class PhotoService
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{
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const METADATA_VERSION = 2;
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/**
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* @var Album
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*/
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private $album;
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/**
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* @var IAlbumSource
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*/
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private $albumSource;
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/**
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* @var ImageHelper
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*/
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private $imageHelper;
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/**
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* @var Photo
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*/
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private $photo;
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/**
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* @var ThemeHelper
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*/
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private $themeHelper;
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public function __construct(Photo $photo)
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{
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$this->photo = $photo;
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$this->album = $photo->album;
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$this->albumSource = $this->album->getAlbumSource();
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$this->imageHelper = new ImageHelper();
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$this->themeHelper = new ThemeHelper();
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}
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public function analyse($queueToken)
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{
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$queuePath = FileHelper::getQueuePath($queueToken);
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$photoFile = join(DIRECTORY_SEPARATOR, [$queuePath, $this->photo->storage_file_name]);
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try
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{
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$imageInfo = null;
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$originalPhotoResource = $this->imageHelper->openImage($photoFile, $imageInfo);
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if ($originalPhotoResource === false)
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{
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throw new \Exception(sprintf('The image "%s" does not appear to be a valid image, or cannot be read', pathinfo($photoFile, PATHINFO_FILENAME)));
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}
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$this->photo->width = $imageInfo[0];
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$this->photo->height = $imageInfo[1];
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$this->photo->mime_type = $imageInfo['mime'];
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// Read the Exif data
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if (empty($this->photo->raw_exif_data))
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{
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$exifData = @exif_read_data($photoFile);
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$isExifDataFound = ($exifData !== false && is_array($exifData));
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$this->photo->raw_exif_data = $isExifDataFound ? base64_encode(serialize($exifData)) : '';
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}
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else
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{
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$exifData = unserialize(base64_decode($this->photo->raw_exif_data));
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$isExifDataFound = ($exifData !== false && is_array($exifData));
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}
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$angleToRotate = 0;
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// If Exif data contains an Orientation, ensure we rotate the original image as such (providing we don't
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// currently have a metadata version - i.e. it hasn't been read and rotated already before)
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if ($isExifDataFound && isset($exifData['Orientation']) && is_null($this->photo->metadata_version))
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{
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switch ($exifData['Orientation'])
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{
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case 3:
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$angleToRotate = 180;
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break;
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case 6:
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$angleToRotate = 270;
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break;
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case 8:
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$angleToRotate = 90;
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break;
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}
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if ($angleToRotate > 0)
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{
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$originalPhotoResource = $this->imageHelper->rotateImage($originalPhotoResource, $angleToRotate);
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if ($angleToRotate == 90 || $angleToRotate == 270)
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{
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$this->photo->width = $imageInfo[1];
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$this->photo->height = $imageInfo[0];
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}
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$this->imageHelper->saveImage($originalPhotoResource, $photoFile, $imageInfo);
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}
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}
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if ($isExifDataFound)
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{
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$this->photo->metadata_version = self::METADATA_VERSION;
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$this->photo->taken_at = $this->metadataDateTime($exifData, $this->photo->taken_at);
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$this->photo->camera_make = $this->metadataCameraMake($exifData, $this->photo->camera_make);
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$this->photo->camera_model = $this->metadataCameraModel($exifData, $this->photo->camera_model);
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$this->photo->camera_software = $this->metadataCameraSoftware($exifData, $this->photo->camera_software);
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$this->photo->aperture_fnumber = $this->metadataApertureFNumber($exifData, $this->photo->aperture_fnumber);
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$this->photo->iso_number = $this->metadataIsoNumber($exifData, $this->photo->iso_number);
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$this->photo->focal_length = $this->metadataFocalLength($exifData, $this->photo->focal_length);
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$this->photo->shutter_speed = $this->metadataExposureTime($exifData, $this->photo->shutter_speed);
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}
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$this->photo->is_analysed = true;
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$this->photo->save();
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// Save the original
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$this->albumSource->saveThumbnail($this->photo, $photoFile);
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$this->regenerateThumbnails($originalPhotoResource);
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}
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catch (\Exception $ex)
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{
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throw $ex;
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}
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finally
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{
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@unlink($photoFile);
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// If the queue directory is now empty, get rid of it
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FileHelper::deleteIfEmpty($queuePath);
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}
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}
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public function changeAlbum(Album $newAlbum)
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{
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/** @var IAlbumSource $currentSource */
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$currentSource = $this->photo->album->getAlbumSource();
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$newSource = $newAlbum->getAlbumSource();
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// First export the original photo from the storage provider
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$photoPath = $this->downloadToTemporaryFolder();
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// Save to the new album
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$newSource->saveThumbnail($this->photo, $photoPath);
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// Delete the original
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$this->delete();
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// Update the ID and new file name
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$this->photo->album_id = $newAlbum->id;
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$this->photo->save();
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// Switch to the new album source
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$this->albumSource = $newSource;
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// Regenerate the thumbnails in the new album
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$this->regenerateThumbnails();
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}
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public function delete()
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{
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// Remove all thumbnails first - so if any fail, we don't delete the original
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$themeInfo = $this->themeHelper->info();
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$thumbnailsRequired = $themeInfo['thumbnails'];
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/** @var mixed $thumbnail */
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foreach ($thumbnailsRequired as $thumbnail)
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{
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$this->albumSource->deleteThumbnail($this->photo, $thumbnail['name']);
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}
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// Next remove the original photo
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$this->albumSource->deleteThumbnail($this->photo);
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// Finally remove the database record
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$this->photo->delete();
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}
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public function downloadOriginalToFolder($folderPath)
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{
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$photoPath = join(DIRECTORY_SEPARATOR, [$folderPath, $this->photo->storage_file_name]);
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$photoHandle = fopen($photoPath, 'w');
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$stream = $this->albumSource->fetchPhotoContent($this->photo);
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$stream->rewind();
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while (!$stream->feof())
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{
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fwrite($photoHandle, $stream->read(4096));
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}
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fflush($photoHandle);
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fclose($photoHandle);
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$stream->close();
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return $photoPath;
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}
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public function flip($horizontal, $vertical)
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{
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// First export the original photo from the storage provider
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$photoPath = $this->downloadToTemporaryFolder();
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$imageInfo = array();
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$originalPhotoImage = $this->imageHelper->openImage($photoPath, $imageInfo);
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if ($this->imageHelper->flipImage($originalPhotoImage, boolval($horizontal), boolval($vertical)))
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{
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$this->imageHelper->saveImage($originalPhotoImage, $photoPath, $imageInfo);
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// Update and save the original image back to the storage provider
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$this->albumSource->saveThumbnail($this->photo, $photoPath);
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// Re-create the thumbnails
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$this->regenerateThumbnails($originalPhotoImage);
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$this->photo->save();
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}
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// Remove the temp file
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@unlink($photoPath);
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}
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public function regenerateThumbnails($originalPhotoResource = null)
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{
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$photoPath = null;
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if (is_null($originalPhotoResource))
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{
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// First export the original photo from the storage provider
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$photoPath = $this->downloadToTemporaryFolder();
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$imageInfo = null;
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$originalPhotoResource = $this->imageHelper->openImage($photoPath, $imageInfo);
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}
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// Generate and save thumbnails
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$themeInfo = $this->themeHelper->info();
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$thumbnailsRequired = $themeInfo['thumbnails'];
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/** @var mixed $thumbnail */
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foreach ($thumbnailsRequired as $thumbnail)
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{
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$generatedThumbnailPath = $this->imageHelper->generateThumbnail($originalPhotoResource, $this->photo, $thumbnail);
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$this->albumSource->saveThumbnail($this->photo, $generatedThumbnailPath, $thumbnail['name']);
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@unlink($generatedThumbnailPath);
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}
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if (is_null($originalPhotoResource) && !is_null($photoPath))
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{
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// Remove the temp file
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@unlink($photoPath);
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}
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}
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public function rotate($angle)
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{
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$imageInfo = array();
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// First export the photo from the storage provider
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$photoPath = $this->downloadToTemporaryFolder();
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$originalPhotoImage = $this->imageHelper->openImage($photoPath, $imageInfo);
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$originalPhotoImage = $this->imageHelper->rotateImage($originalPhotoImage, intval($angle));
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$this->imageHelper->saveImage($originalPhotoImage, $photoPath, $imageInfo);
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// Update and save the original image back to the storage provider
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$this->albumSource->saveThumbnail($this->photo, $photoPath);
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if ($angle == 90 || $angle == 270)
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{
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$width = $this->photo->width;
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$this->photo->width = $this->photo->height;
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$this->photo->height = $width;
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}
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$this->regenerateThumbnails($originalPhotoImage);
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$this->photo->save();
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// Remove the temp file
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@unlink($photoPath);
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}
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private function calculateValueFromFraction($input)
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{
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$split = explode('/', $input);
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if (count($split) != 2)
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{
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return $split;
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}
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$numerator = intval($split[0]);
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$denominator = intval($split[1]);
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return $denominator == 0
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? 0
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: ($numerator / $denominator);
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}
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private function downloadToTemporaryFolder()
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{
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$photoPath = tempnam(sys_get_temp_dir(), 'BlueTwilight_');
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$photoHandle = fopen($photoPath, 'w');
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$stream = $this->albumSource->fetchPhotoContent($this->photo);
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$stream->rewind();
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while (!$stream->feof())
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{
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fwrite($photoHandle, $stream->read(4096));
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}
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fflush($photoHandle);
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fclose($photoHandle);
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$stream->close();
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return $photoPath;
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}
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private function metadataApertureFNumber(array $exifData, $originalValue = null)
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{
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if (isset($exifData['FNumber']))
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{
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$value = $this->calculateValueFromFraction($exifData['FNumber']);
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if (intval($value) === $value)
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{
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return sprintf('f/%d', $value);
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}
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return sprintf('f/%0.1f', $value);
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}
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return $originalValue;
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}
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private function metadataCameraMake(array $exifData, $originalValue = null)
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{
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if (isset($exifData['Make']))
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{
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return $exifData['Make'];
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}
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return $originalValue;
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}
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private function metadataCameraModel(array $exifData, $originalValue = null)
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{
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if (isset($exifData['Model']))
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{
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return $exifData['Model'];
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}
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return $originalValue;
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}
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private function metadataCameraSoftware(array $exifData, $originalValue = null)
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{
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if (isset($exifData['Software']))
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{
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return $exifData['Software'];
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}
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return $originalValue;
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}
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private function metadataDateTime(array $exifData, $originalValue = null)
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{
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$dateTime = null;
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if (isset($exifData['DateTimeOriginal']))
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{
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$dateTime = $exifData['DateTimeOriginal'];
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}
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else if (isset($exifData['DateTime']))
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{
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$dateTime = $exifData['DateTime'];
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}
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if (is_null($dateTime))
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{
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return $originalValue;
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}
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return preg_replace('/^([\d]{4}):([\d]{2}):([\d]{2})/', '$1-$2-$3', $dateTime);
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}
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private function metadataExposureTime(array $exifData, $originalValue = null)
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{
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if (isset($exifData['ExposureTime']))
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{
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$decimal = $this->calculateValueFromFraction($exifData['ExposureTime']);
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$fraction = MiscHelper::decimalToFraction($decimal);
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return sprintf('%d/%d', $fraction[0], $fraction[1]);
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}
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return $originalValue;
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}
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private function metadataFocalLength(array $exifData, $originalValue = null)
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{
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if (isset($exifData['FocalLength']))
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{
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return $this->calculateValueFromFraction($exifData['FocalLength']);
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}
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return $originalValue;
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}
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private function metadataIsoNumber(array $exifData, $originalValue = null)
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{
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if (isset($exifData['ISOSpeedRatings']))
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{
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return $exifData['ISOSpeedRatings'];
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}
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return $originalValue;
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}
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} |