Function Reference: geodir_exif

Summary

Fixes image orientation.

Package

GeoDirectory

Parameters

$file

(array) (required) The image file.

Default: None

Return Values

(mixed)

• Image file.

Change Log

Since: 1.0.0

Filters

‘geodir_image_upload_set_quality’ [Line: 1937]

Source File

geodir_exif() is located in geodirectory-functions/custom_functions.php [Line: 1846]

Source Code

function geodir_exif( $file ) {
	if ( empty( $file ) || ! is_array( $file ) ) {
		return $file;
	}

	$file_path = ! empty( $file['tmp_name'] ) ? sanitize_text_field( $file['tmp_name'] ) : '';
	if ( ! ( $file_path && file_exists( $file_path ) ) ) {
		return $file;
	}
	$file['file'] = $file_path;

	if ( ! file_is_valid_image( $file_path ) ) {
		return $file; // Bail if file is not an image.
	}

	if ( ! function_exists( 'wp_get_image_editor' ) ) {
		return $file;
	}

	$mime_type = $file['type'];
	$exif      = array();
	if ( $mime_type == 'image/jpeg' && function_exists( 'exif_read_data' ) ) {
		try {
			$exif = exif_read_data( $file_path );
		} catch ( Exception $e ) {
			$exif = array();
		}
	}

	$rotate      = false;
	$flip        = false;
	$modify      = false;
	$orientation = 0;
	if ( ! empty( $exif ) && isset( $exif['Orientation'] ) ) {
		switch ( (int) $exif['Orientation'] ) {
			case 1:
				// do nothing
				break;
			case 2:
				$flip   = array( false, true );
				$modify = true;
				break;
			case 3:
				$orientation = - 180;
				$rotate      = true;
				$modify      = true;
				break;
			case 4:
				$flip   = array( true, false );
				$modify = true;
				break;
			case 5:
				$orientation = - 90;
				$rotate      = true;
				$flip        = array( false, true );
				$modify      = true;
				break;
			case 6:
				$orientation = - 90;
				$rotate      = true;
				$modify      = true;
				break;
			case 7:
				$orientation = - 270;
				$rotate      = true;
				$flip        = array( false, true );
				$modify      = true;
				break;
			case 8:
			case 9:
				$orientation = - 270;
				$rotate      = true;
				$modify      = true;
				break;
			default:
				$orientation = 0;
				$rotate      = true;
				$modify      = true;
				break;
		}
	}

	$quality = null;
	/**
	 * Filter the image quality.
	 *
	 * @since 1.5.7
	 *
	 * @param int|null $quality Image Compression quality between 1-100% scale. Default null.
	 * @param string $quality   Image mime type.
	 */
	$quality = apply_filters( 'geodir_image_upload_set_quality', $quality, $mime_type );
	if ( $quality !== null ) {
		$modify = true;
	}

	if ( ! $modify ) {
		return $file; // no change
	}

	$image = wp_get_image_editor( $file_path );
	if ( ! is_wp_error( $image ) ) {
		if ( $rotate ) {
			$image->rotate( $orientation );
		}

		if ( ! empty( $flip ) ) {
			$image->flip( $flip[0], $flip[1] );
		}

		if ( $quality !== null ) {
			$image->set_quality( (int) $quality );
		}

		$result = $image->save( $file_path );
		if ( ! is_wp_error( $result ) ) {
			$file['file']     = $result['path'];
			$file['tmp_name'] = $result['path'];
		}
	}

	// The image orientation is fixed, pass it back for further processing
	return $file;
}