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/*
* Copyright (C) 2010 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.
*/
use crate::{
common::{BitArray, Result},
RXingResult,
};
use super::{UPCEANExtension2Support, UPCEANExtension5Support, UPCEANReader, STAND_IN};
#[derive(Default)]
pub struct UPCEANExtensionSupport {
twoSupport: UPCEANExtension2Support,
fiveSupport: UPCEANExtension5Support,
}
impl UPCEANExtensionSupport {
const EXTENSION_START_PATTERN: [u32; 3] = [1, 1, 2];
pub fn decodeRow(
&self,
rowNumber: u32,
row: &BitArray,
rowOffset: usize,
) -> Result<RXingResult> {
let extensionStartRange =
STAND_IN.findGuardPattern(row, rowOffset, false, &Self::EXTENSION_START_PATTERN)?;
if let Ok(res_1) = self
.fiveSupport
.decodeRow(rowNumber, row, &extensionStartRange)
{
Ok(res_1)
} else {
self.twoSupport
.decodeRow(rowNumber, row, &Self::EXTENSION_START_PATTERN)
}
}
}