remove & re-add filter so we can use the existing function

	 * file streams so we need to make a temporary local copy to extract

	 * exif data from.

	 *

	 * @param array  $meta Array of metadata

	 * @param string $file File name on S3

	 * @return array

	 * @param array  $meta

	 * @param string $file

	 * @return array|bool

	 */

	public function wp_filter_read_image_metadata( $meta, $file ) {

		// Get a local copy of the file

		$temp_filename = wp_tempnam( $file, 's3-uploads' );

		@ copy( $file, $temp_filename );

		$exif = @ exif_read_data( $temp_filename );

		// Clean up

		@ unlink( $temp_filename );

		// Bail if the copy and exif read failed

		if ( ! $exif ) {

		remove_filter( 'wp_read_image_metadata', array( $this, 'wp_filter_read_image_metadata' ), 10, 2 );

		$temp_file = $this->copy_image_from_s3( $file );

		$meta      = wp_read_image_metadata( $temp_file );

		add_filter( 'wp_read_image_metadata', array( $this, 'wp_filter_read_image_metadata' ), 10, 2 );

		unlink( $temp_file );

		return $meta;

	}

		if ( ! empty( $exif['ImageDescription'] ) ) {

			mbstring_binary_safe_encoding();

			$description_length = strlen( $exif['ImageDescription'] );

			reset_mbstring_encoding();

			if ( empty( $meta['title'] ) && $description_length < 80 ) {

				// Assume the title is stored in ImageDescription

				$meta['title'] = trim( $exif['ImageDescription'] );

			}

			if ( empty( $meta['caption'] ) && ! empty( $exif['COMPUTED']['UserComment'] ) ) {

				$meta['caption'] = trim( $exif['COMPUTED']['UserComment'] );

			}

			if ( empty( $meta['caption'] ) ) {

				$meta['caption'] = trim( $exif['ImageDescription'] );

			}

		} elseif ( empty( $meta['caption'] ) && ! empty( $exif['Comments'] ) ) {

			$meta['caption'] = trim( $exif['Comments'] );

		}

		if ( empty( $meta['credit'] ) ) {

			if ( ! empty( $exif['Artist'] ) ) {

				$meta['credit'] = trim( $exif['Artist'] );

			} elseif ( ! empty( $exif['Author'] ) ) {

				$meta['credit'] = trim( $exif['Author'] );

			}

		}

		if ( empty( $meta['copyright'] ) && ! empty( $exif['Copyright'] ) ) {

			$meta['copyright'] = trim( $exif['Copyright'] );

		}

		if ( ! empty( $exif['FNumber'] ) ) {

			$meta['aperture'] = round( wp_exif_frac2dec( $exif['FNumber'] ), 2 );

		}

		if ( ! empty( $exif['Model'] ) ) {

			$meta['camera'] = trim( $exif['Model'] );

		}

		if ( empty( $meta['created_timestamp'] ) && ! empty( $exif['DateTimeDigitized'] ) ) {

			$meta['created_timestamp'] = wp_exif_date2ts( $exif['DateTimeDigitized'] );

		}

		if ( ! empty( $exif['FocalLength'] ) ) {

			$meta['focal_length'] = (string) wp_exif_frac2dec( $exif['FocalLength'] );

		}

		if ( ! empty( $exif['ISOSpeedRatings'] ) ) {

			$meta['iso'] = is_array( $exif['ISOSpeedRatings'] ) ? reset( $exif['ISOSpeedRatings'] ) : $exif['ISOSpeedRatings'];

			$meta['iso'] = trim( $meta['iso'] );

		}

		if ( ! empty( $exif['ExposureTime'] ) ) {

			$meta['shutter_speed'] = (string) wp_exif_frac2dec( $exif['ExposureTime'] );

		}

		if ( ! empty( $exif['Orientation'] ) ) {

			$meta['orientation'] = $exif['Orientation'];

		}

		foreach ( array( 'title', 'caption', 'credit', 'copyright', 'camera', 'iso' ) as $key ) {

			if ( $meta[ $key ] && ! seems_utf8( $meta[ $key ] ) ) {

				$meta[ $key ] = utf8_encode( $meta[ $key ] );

			}

		}

		foreach ( $meta['keywords'] as $key => $keyword ) {

			if ( ! seems_utf8( $keyword ) ) {

				$meta['keywords'][ $key ] = utf8_encode( $keyword );

			}

		}

		return $meta;

	/**

	 * Get a local copy of the file.

	 *

	 * @param  string $file

	 * @return string

	 */

	public function copy_image_from_s3( $file, $callback ) {

		$temp_filename = wp_tempnam( $file, 's3-uploads' );

		copy( $file, $temp_filename );

		return $temp_filename;

	}

}