nt( $meta['sizes'] ) : 0;
							$smush_data['size_before']  += ! empty( $meta['stats']['size_before'] ) ? (int) $meta['stats']['size_before'] : 0;
							$smush_data['size_after']   += ! empty( $meta['stats']['size_after'] ) ? (int) $meta['stats']['size_after'] : 0;
						}
					}
				}
			}

			$smush_data['bytes'] = $smush_data['size_before'] - $smush_data['size_after'];

			// Update the offset.
			$offset += $this->query_limit;

			// Compare the Offset value to total images.
			if ( ! empty( $this->total_count ) && $this->total_count <= $offset ) {
				$query_next = false;
			}
		}

		// Add directory smush image bytes.
		if ( ! empty( $this->dir_stats['bytes'] ) && $this->dir_stats['bytes'] > 0 ) {
			$smush_data['bytes'] += $this->dir_stats['bytes'];
		}
		// Add directory smush image total size.
		if ( ! empty( $this->dir_stats['orig_size'] ) && $this->dir_stats['orig_size'] > 0 ) {
			$smush_data['size_before'] += $this->dir_stats['orig_size'];
		}
		// Add directory smush saved size.
		if ( ! empty( $this->dir_stats['image_size'] ) && $this->dir_stats['image_size'] > 0 ) {
			$smush_data['size_after'] += $this->dir_stats['image_size'];
		}
		// Add directory smushed images.
		if ( ! empty( $this->dir_stats['optimised'] ) && $this->dir_stats['optimised'] > 0 ) {
			$smush_data['total_images'] += $this->dir_stats['optimised'];
		}

		// Resize Savings.
		$smush_data['resize_count']   = $this->get_savings( 'resize', false, false, true );
		$resize_savings               = $this->get_savings( 'resize', false );
		$smush_data['resize_savings'] = ! empty( $resize_savings['bytes'] ) ? $resize_savings['bytes'] : 0;

		// Conversion Savings.
		$conversion_savings               = $this->get_savings( 'pngjpg', false );
		$smush_data['conversion_savings'] = ! empty( $conversion_savings['bytes'] ) ? $conversion_savings['bytes'] : 0;

		if ( ! isset( $smush_data['bytes'] ) || $smush_data['bytes'] < 0 ) {
			$smush_data['bytes'] = 0;
		}

		// Add the resize savings to bytes.
		$smush_data['bytes']       += $smush_data['resize_savings'];
		$smush_data['size_before'] += $resize_savings['size_before'];
		$smush_data['size_after']  += $resize_savings['size_after'];

		// Add Conversion Savings.
		$smush_data['bytes']       += $smush_data['conversion_savings'];
		$smush_data['size_before'] += $conversion_savings['size_before'];
		$smush_data['size_after']  += $conversion_savings['size_after'];

		if ( $smush_data['size_before'] > 0 ) {
			$smush_data['percent'] = ( $smush_data['bytes'] / $smush_data['size_before'] ) * 100;
		}

		// Round off percentage.
		$smush_data['percent'] = round( $smush_data['percent'], 1 );

		// Human-readable format.
		$smush_data['human'] = size_format(
			$smush_data['bytes'],
			( $smush_data['bytes'] >= 1024 ) ? 1 : 0
		);

		// Setup Smushed attachment IDs.
		$this->smushed_attachments = ! empty( $smush_data['id'] ) ? $smush_data['id'] : '';

		// Super Smushed attachment count.
		$this->super_smushed = $supersmushed;

		// Remove ids from stats.
		unset( $smush_data['id'] );

		// Update cache.
		update_option( 'smush_global_stats', $smush_data, false );

		return $smush_data;
	}

	/**
	 * Returns remaining count
	 *
	 * @return int
	 */
	private function remaining_count() {
		$resmush_count   = count( $this->resmush_ids );
		$remaining_count = $this->total_count - $this->smushed_count - $this->skipped_count;

		// Just a failsafe - can't have remaining value be a negative value.
		$remaining_count = $remaining_count > 0 ? $remaining_count : 0;

		// Check if the resmush count is equal to remaining count.
		if ( $resmush_count > 0 && ( $resmush_count !== $this->smushed_count || 0 === absint( $remaining_count ) ) ) {
			return $resmush_count + $remaining_count;
		}

		return $remaining_count;
	}

	/**
	 * Return the number of skipped attachments.
	 *
	 * @since 3.0
	 *
	 * @param bool $force  Force data refresh.
	 *
	 * @return array
	 */
	private function skipped_count( $force ) {
		$images = wp_cache_get( 'skipped_images', 'wp-smush' );
		if ( ! $force && $images ) {
			return $images;
		}

		global $wpdb;
		$images = $wpdb->get_col( "SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key='wp-smush-ignore-bulk'" ); // Db call ok.
		wp_cache_set( 'skipped_images', $images, 'wp-smush' );

		return $images;
	}

}