Added: Incorrect image orientation

rainloop/v/0.0.0/app/libraries/Imagine/Image/Metadata/ExifMetadataReader.php

@@ -0,0 +1,114 @@
+<?php
+
+/*
+ * This file is part of the Imagine package.
+ *
+ * (c) Bulat Shakirzyanov <mallluhuct@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Imagine\Image\Metadata;
+
+use Imagine\Exception\InvalidArgumentException;
+use Imagine\Exception\NotSupportedException;
+
+/**
+ * Metadata driven by Exif information
+ */
+class ExifMetadataReader extends AbstractMetadataReader
+{
+    public function __construct()
+    {
+        if (!self::isSupported()) {
+            throw new NotSupportedException('PHP exif extension is required to use the ExifMetadataReader');
+        }
+    }
+
+    public static function isSupported()
+    {
+        return function_exists('exif_read_data');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function extractFromFile($file)
+    {
+        if (false === $data = @file_get_contents($file)) {
+            throw new InvalidArgumentException(sprintf('File %s is not readable.', $file));
+        }
+
+        return $this->doReadData($data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function extractFromData($data)
+    {
+        return $this->doReadData($data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function extractFromStream($resource)
+    {
+        if (0 < ftell($resource)) {
+            $metadata = stream_get_meta_data($resource);
+            if ($metadata['seekable']) {
+                rewind($resource);
+            }
+        }
+
+        return $this->doReadData(stream_get_contents($resource));
+    }
+
+    /**
+     * Extracts metadata from raw data, merges with existing metadata
+     *
+     * @param string $data
+     *
+     * @return MetadataBag
+     */
+    private function doReadData($data)
+    {
+        if (substr($data, 0, 2) === 'II') {
+            $mime = 'image/tiff';
+        } else {
+            $mime = 'image/jpeg';
+        }
+
+        return $this->extract('data://' . $mime . ';base64,' . base64_encode($data));
+    }
+
+    /**
+     * Performs the exif data extraction given a path or data-URI representation.
+     *
+     * @param string $path The path to the file or the data-URI representation.
+     *
+     * @return MetadataBag
+     */
+    private function extract($path)
+    {
+        if (false === $exifData = @exif_read_data($path, null, true, false)) {
+            return array();
+        }
+
+        $metadata = array();
+        $sources = array('EXIF' => 'exif', 'IFD0' => 'ifd0');
+
+        foreach ($sources as $name => $prefix) {
+            if (!isset($exifData[$name])) {
+                continue;
+            }
+            foreach ($exifData[$name] as $prop => $value) {
+                $metadata[$prefix.'.'.$prop] = $value;
+            }
+        }
+
+        return $metadata;
+    }
+}