# woocommerce-pos/1.10.20/vendor_prefixed/chillerlan/php-qrcode/src/Common/LuminanceSourceInterface.php

WCPOS – Point of Sale (POS) plugin for WooCommerce, version 1.10.20. 56 lines.

- Page: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/code/vendor_prefixed/chillerlan/php-qrcode/src/Common/LuminanceSourceInterface.php
- Raw: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/raw/vendor_prefixed/chillerlan/php-qrcode/src/Common/LuminanceSourceInterface.php
- Modified: 2026-06-09T13:55:26+00:00

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```php
<?php

/**
 * Interface LuminanceSourceInterface
 *
 * @created      18.11.2021
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2021 smiley
 * @license      MIT
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Common;

/**
 */
interface LuminanceSourceInterface
{
    /**
     * Fetches luminance data for the underlying bitmap. Values should be fetched using:
     * `int luminance = array[y * width + x] & 0xff`
     *
     * @return array A row-major 2D array of luminance values. Do not use result $length as it may be
     *         larger than $width * $height bytes on some platforms. Do not modify the contents
     *         of the result.
     */
    public function getLuminances() : array;
    /**
     * @return int The width of the bitmap.
     */
    public function getWidth() : int;
    /**
     * @return int The height of the bitmap.
     */
    public function getHeight() : int;
    /**
     * Fetches one row of luminance data from the underlying platform's bitmap. Values range from
     * 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
     * to bitwise and with 0xff for each value. It is preferable for implementations of this method
     * to only fetch this row rather than the whole image, since no 2D Readers may be installed and
     * getLuminances() may never be called.
     *
     * @param int $y  The row to fetch, which must be in [0,getHeight())
     *
     * @return array An array containing the luminance data.
     * @throws \chillerlan\QRCode\Decoder\QRCodeDecoderException
     */
    public function getRow(int $y) : array;
    /**
     * Creates a LuminanceSource instance from the given file
     */
    public static function fromFile(string $path) : self;
    /**
     * Creates a LuminanceSource instance from the given data blob
     */
    public static function fromBlob(string $blob) : self;
}

```