#41: Read and display more photographer-specific details
This commit is contained in:
Andy Heathershaw
parent
ab76fb6de5
commit
c258303700
@ -52,6 +52,50 @@ class MiscHelper
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return (int) $val;
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}
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/**
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* Convert a decimal (e.g. 3.5) to a fraction (e.g. 7/2).
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* Adapted from: http://jonisalonen.com/2012/converting-decimal-numbers-to-ratios/
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*
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* @param float $decimal the decimal number.
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*
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* @return array|bool a 1/2 would be [1, 2] array (this can be imploded with '/' to form a string)
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*/
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public static function decimalToFraction($decimal)
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{
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if ($decimal < 0 || !is_numeric($decimal)) {
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// Negative digits need to be passed in as positive numbers
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// and prefixed as negative once the response is imploded.
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return false;
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}
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if ($decimal == 0) {
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return [0, 0];
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}
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$tolerance = 1.e-4;
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$numerator = 1;
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$h2 = 0;
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$denominator = 0;
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$k2 = 1;
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$b = 1 / $decimal;
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do {
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$b = 1 / $b;
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$a = floor($b);
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$aux = $numerator;
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$numerator = $a * $numerator + $h2;
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$h2 = $aux;
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$aux = $denominator;
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$denominator = $a * $denominator + $k2;
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$k2 = $aux;
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$b = $b - $a;
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} while (abs($decimal - $numerator / $denominator) > $decimal * $tolerance);
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return [
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$numerator,
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$denominator
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];
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}
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public static function getEnvironmentFilePath()
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{
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return sprintf('%s/.env', dirname(dirname(__DIR__)));
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@ -32,6 +32,9 @@ class Photo extends Model
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'height',
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'is_analysed',
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'raw_exif_data',
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'aperture_fnumber',
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'iso_number',
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'shutter_speed',
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'created_at',
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'updated_at'
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];
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@ -6,6 +6,7 @@ use App\Album;
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use App\AlbumSources\IAlbumSource;
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use App\Helpers\FileHelper;
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use App\Helpers\ImageHelper;
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use App\Helpers\MiscHelper;
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use App\Helpers\ThemeHelper;
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use App\Photo;
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use Symfony\Component\HttpFoundation\File\File;
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@ -68,18 +69,23 @@ class PhotoService
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$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($exifData));
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if (is_null($this->photo->raw_exif_data))
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{
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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
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if ($isExifDataFound && isset($exifData['Orientation']))
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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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@ -117,6 +123,10 @@ class PhotoService
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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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@ -288,6 +298,22 @@ class PhotoService
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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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@ -306,6 +332,23 @@ class PhotoService
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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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@ -355,4 +398,36 @@ class PhotoService
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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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}
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@ -0,0 +1,40 @@
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<?php
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use Illuminate\Support\Facades\Schema;
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use Illuminate\Database\Schema\Blueprint;
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use Illuminate\Database\Migrations\Migration;
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class AddPhotographyPillarColumns extends Migration
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{
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/**
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* Run the migrations.
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*
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* @return void
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*/
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public function up()
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{
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Schema::table('photos', function (Blueprint $table)
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{
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$table->string('aperture_fnumber', 20)->nullable(true);
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$table->string('iso_number', 20)->nullable(true);
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$table->string('shutter_speed', 20)->nullable(true);
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$table->string('focal_length', 20)->nullable(true);
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});
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}
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/**
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* Reverse the migrations.
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*
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* @return void
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*/
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public function down()
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{
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Schema::table('photos', function (Blueprint $table)
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{
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$table->dropColumn('aperture_fnumber');
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$table->dropColumn('iso_number');
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$table->dropColumn('shutter_speed');
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$table->dropColumn('focal_length');
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});
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}
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}
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@ -7,9 +7,18 @@ return [
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'default' => 'Default',
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'slideshow' => 'Slideshow'
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],
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'aperture' => 'Aperture:',
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'back_to_album' => 'Back to :name',
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'camera_make' => 'Camera make:',
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'camera_model' => 'Camera model:',
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'camera_software' => 'Camera software:',
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'date_taken' => 'Date taken:',
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'file_name' => 'File name:',
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'focal_length' => 'Focal length:',
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'focal_length_units' => ':valuemm',
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'index_no_results_heading' => 'Start something amazing',
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'index_no_results_text' => 'This gallery is currently empty. If you are the owner of this gallery, you can create new albums and upload photos using the :admin_link.',
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'iso_rating' => 'ISO speed rating:',
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'label_intro' => 'All photos tagged with the label ":name".',
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'label_no_results_text' => 'No photos are tagged with the label ":name".',
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'label_no_results_text_2' => 'If you are an admin of this gallery, you can upload and tag photos in the :admin_link.',
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@ -25,6 +34,8 @@ return [
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'previous_button' => '« Previous Photo',
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'show_more_labels' => '... and :count other|... and :count others',
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'show_raw_exif_data' => 'Show all EXIF data',
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'shutter_speed' => 'Shutter speed:',
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'shutter_speed_units' => ':value sec.',
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'statistics' => [
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'album_by_photos' => 'Top 10 largest albums - number of photos',
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'album_by_size' => 'Top 10 largest albums - photo size (MB)',
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@ -21,7 +21,7 @@
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</div>
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<div class="row">
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<div class="col-sm-8 content-body">
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<div class="col-md-8 content-body">
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@if ($is_original_allowed)
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<a href="{{ $photo->thumbnailUrl() }}">
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@endif
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@ -57,7 +57,7 @@
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@endif
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</div>
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<div class="col-sm-4">
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<div class="col-md-4">
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<div class="card">
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<div class="card-header">Information about this photo:</div>
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<div class="card-body" style="padding: 0;">
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@ -70,37 +70,65 @@
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</thead>
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<tbody>
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<tr>
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<td class="metadata_name">File name:</td>
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<td class="metadata_name">@lang('gallery.file_name')</td>
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<td class="metadata_value">{{ $photo->file_name }}</td>
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</tr>
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@if (strlen($photo->taken_at) > 0)
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@if (!empty($photo->taken_at))
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<tr>
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<td class="metadata_name">Date taken:</td>
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<td class="metadata_name">@lang('gallery.date_taken')</td>
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<td class="metadata_value">{{ date(UserConfig::get('date_format'), strtotime($photo->taken_at)) }}</td>
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</tr>
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@endif
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@if (strlen($photo->camera_make) > 0)
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@if (!empty($photo->camera_make))
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<tr>
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<td class="metadata_name">Camera make:</td>
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<td class="metadata_name">@lang('gallery.camera_make')</td>
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<td class="metadata_value">{{ $photo->camera_make }}</td>
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</tr>
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@endif
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@if (strlen($photo->camera_model) > 0)
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@if (!empty($photo->camera_model))
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<tr>
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<td class="metadata_name">Camera model:</td>
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<td class="metadata_name">@lang('gallery.camera_model')</td>
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<td class="metadata_value">{{ $photo->camera_model }}</td>
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</tr>
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@endif
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@if (strlen($photo->camera_software) > 0)
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@if (!empty($photo->camera_software))
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<tr>
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<td class="metadata_name">Camera software:</td>
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<td class="metadata_name">@lang('gallery.camera_software')</td>
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<td class="metadata_value">{{ $photo->camera_software }}</td>
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</tr>
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@endif
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@if (!empty($photo->iso_number))
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<tr>
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<td class="metadata_name">@lang('gallery.iso_rating')</td>
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<td class="metadata_value">{{ $photo->iso_number }}</td>
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</tr>
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@endif
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@if (!empty($photo->focal_length))
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<tr>
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<td class="metadata_name">@lang('gallery.focal_length')</td>
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<td class="metadata_value">@lang('gallery.focal_length_units', ['value' => $photo->focal_length])</td>
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</tr>
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@endif
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@if (!empty($photo->aperture_fnumber))
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<tr>
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<td class="metadata_name">@lang('gallery.aperture')</td>
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<td class="metadata_value">{{ $photo->aperture_fnumber }}</td>
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</tr>
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@endif
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@if (!empty($photo->shutter_speed))
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<tr>
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<td class="metadata_name">@lang('gallery.shutter_speed')</td>
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<td class="metadata_value">@lang('gallery.shutter_speed_units', ['value' => $photo->shutter_speed])</td>
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</tr>
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@endif
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</tbody>
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</table>
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</div>
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