qzxing/source/zxing/qrcode/QRErrorCorrectionLevel.cpp

66 lines
1.9 KiB
C++

// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
/*
* ErrorCorrectionLevel.cpp
* zxing
*
* Created by Christian Brunschen on 15/05/2008.
* Copyright 2008-2011 ZXing authors All rights reserved.
*
* 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.
*/
#include <zxing/qrcode/ErrorCorrectionLevel.h>
using std::string;
namespace zxing {
namespace qrcode {
ErrorCorrectionLevel::ErrorCorrectionLevel(int inOrdinal,
int bits,
char const* name) :
ordinal_(inOrdinal), bits_(bits), name_(name) {}
int ErrorCorrectionLevel::ordinal() const {
return ordinal_;
}
int ErrorCorrectionLevel::bits() const {
return bits_;
}
string const& ErrorCorrectionLevel::name() const {
return name_;
}
ErrorCorrectionLevel::operator string const& () const {
return name_;
}
ErrorCorrectionLevel& ErrorCorrectionLevel::forBits(int bits) {
if (bits < 0 || bits >= N_LEVELS) {
throw ReaderException("Ellegal error correction level bits");
}
return *FOR_BITS[bits];
}
ErrorCorrectionLevel ErrorCorrectionLevel::L(0, 0x01, "L");
ErrorCorrectionLevel ErrorCorrectionLevel::M(1, 0x00, "M");
ErrorCorrectionLevel ErrorCorrectionLevel::Q(2, 0x03, "Q");
ErrorCorrectionLevel ErrorCorrectionLevel::H(3, 0x02, "H");
ErrorCorrectionLevel *ErrorCorrectionLevel::FOR_BITS[] = { &M, &L, &H, &Q };
int ErrorCorrectionLevel::N_LEVELS = 4;
}
}