+ public function set_quality( $quality = null ) {
+ if ( null === $quality ) {
+ /**
+ * Filter the default image compression quality setting.
+ *
+ * Applies only during initial editor instantiation, or when set_quality() is run
+ * manually without the `$quality` argument.
+ *
+ * set_quality() has priority over the filter.
+ *
+ * @since 3.5.0
+ *
+ * @param int $quality Quality level between 1 (low) and 100 (high).
+ * @param string $mime_type Image mime type.
+ */
+ $quality = apply_filters( 'wp_editor_set_quality', $this->default_quality, $this->mime_type );
+
+ if ( 'image/jpeg' == $this->mime_type ) {
+ /**
+ * Filter the JPEG compression quality for backward-compatibility.
+ *
+ * Applies only during initial editor instantiation, or when set_quality() is run
+ * manually without the `$quality` argument.
+ *
+ * set_quality() has priority over the filter.
+ *
+ * The filter is evaluated under two contexts: 'image_resize', and 'edit_image',
+ * (when a JPEG image is saved to file).
+ *
+ * @since 2.5.0
+ *
+ * @param int $quality Quality level between 0 (low) and 100 (high) of the JPEG.
+ * @param string $context Context of the filter.
+ */
+ $quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' );
+ }
+
+ if ( $quality < 0 || $quality > 100 ) {
+ $quality = $this->default_quality;
+ }
+ }
+
+ // Allow 0, but squash to 1 due to identical images in GD, and for backwards compatibility.
+ if ( 0 === $quality ) {
+ $quality = 1;
+ }