#pragma once
/*
* Copyright 2016 Nu-book Inc.
* Copyright 2016 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

namespace ZXing {

class BinaryBitmap;
class Result;

/**
* Implementations of this interface can decode an image of a barcode in some format into
* the string it encodes. For example, {@link com.google.zxing.qrcode.QRCodeReader} can
* decode a QR code. The decoder may optionally receive hints from the caller which may help
* it decode more quickly or accurately.
*
* See {@link MultiFormatReader}, which attempts to determine what barcode
* format is present within the image as well, and then decodes it accordingly.
*
* All readers are thread-safe with no temporary state left behind after decode().
*
* @author Sean Owen
* @author dswitkin@google.com (Daniel Switkin)
*/
class Reader
{
public:
	virtual ~Reader() {}

	/**
	* Locates and decodes a barcode in some format within an image. This method also accepts
	* hints, each possibly associated to some data, which may help the implementation decode.
	*
	* @param image image of barcode to decode
	* @param hints passed as a {@link java.util.Map} from {@link DecodeHintType}
	* to arbitrary data. The
	* meaning of the data depends upon the hint type. The implementation may or may not do
	* anything with these hints.
	* @return string which the barcode encodes
	* @throws NotFoundException if no potential barcode is found
	* @throws ChecksumException if a potential barcode is found but does not pass its checksum
	* @throws FormatException if a potential barcode is found but format is invalid
	*/
	virtual Result decode(const BinaryBitmap& image) const = 0;
};

} // ZXing
