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add ReadQRCodewords

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This commit is contained in:
Henry Schimke
2023-03-30 10:32:42 -05:00
parent af626afc15
commit ae5539e270
4 changed files with 120 additions and 36 deletions
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82
src/qrcode/cpp_port/bitmatrix_parser.rs
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@@ -10,7 +10,7 @@ use crate::{
Exceptions,
};
use super::detector::AppendBit;
use super::{data_mask::GetDataMaskBit, detector::AppendBit};
pub fn getBit(bitMatrix: &BitMatrix, x: u32, y: u32, mirrored: Option<bool>) -> bool {
let mirrored = mirrored.unwrap_or(false);
@@ -121,42 +121,54 @@ pub fn ReadQRCodewords(
version: VersionRef,
formatInfo: &FormatInformation,
) -> Result<Vec<u8>> {
todo!()
// BitMatrix functionPattern = version.buildFunctionPattern();
let functionPattern: BitMatrix = version.buildFunctionPattern()?;
// ByteArray result;
// result.reserve(version.totalCodewords());
// uint8_t currentByte = 0;
// bool readingUp = true;
// int bitsRead = 0;
// int dimension = bitMatrix.height();
// // Read columns in pairs, from right to left
// for (int x = dimension - 1; x > 0; x -= 2) {
// // Skip whole column with vertical timing pattern.
// if (x == 6)
// x--;
// // Read alternatingly from bottom to top then top to bottom
// for (int row = 0; row < dimension; row++) {
// int y = readingUp ? dimension - 1 - row : row;
// for (int col = 0; col < 2; col++) {
// int xx = x - col;
// // Ignore bits covered by the function pattern
// if (!functionPattern.get(xx, y)) {
// // Read a bit
// AppendBit(currentByte,
// GetDataMaskBit(formatInfo.dataMask, xx, y) != getBit(bitMatrix, xx, y, formatInfo.isMirrored));
// // If we've made a whole byte, save it off
// if (++bitsRead % 8 == 0)
// result.push_back(std::exchange(currentByte, 0));
// }
// }
// }
// readingUp = !readingUp; // switch directions
// }
// if (Size(result) != version.totalCodewords())
// return {};
let mut result = Vec::new();
result.reserve(version.getTotalCodewords() as usize);
let mut currentByte = 0;
let mut readingUp = true;
let mut bitsRead = 0;
let dimension = bitMatrix.height();
// Read columns in pairs, from right to left
let mut x = dimension - 1;
while x > 0 {
// for (int x = dimension - 1; x > 0; x -= 2) {
// Skip whole column with vertical timing pattern.
if (x == 6) {
x -= 1;
}
// Read alternatingly from bottom to top then top to bottom
for row in 0..dimension {
// for (int row = 0; row < dimension; row++) {
let y = if readingUp { dimension - 1 - row } else { row };
for col in 0..2 {
// for (int col = 0; col < 2; col++) {
let xx = x - col;
// Ignore bits covered by the function pattern
if (!functionPattern.get(xx, y)) {
// Read a bit
AppendBit(
&mut currentByte,
GetDataMaskBit(formatInfo.data_mask as u32, xx, y, None)
!= getBit(bitMatrix, xx, y, Some(formatInfo.isMirrored)),
);
// If we've made a whole byte, save it off
bitsRead += 1;
if (bitsRead % 8 == 0) {
result.push(std::mem::take(&mut currentByte));
}
}
}
}
readingUp = !readingUp; // switch directions
// return result;
x -= 2;
}
if ((result.len()) != version.getTotalCodewords() as usize) {
return Err(Exceptions::FORMAT);
}
Ok(result.iter().copied().map(|x| x as u8).collect())
}
pub fn ReadMQRCodewords(