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add ReadMQRCodewords

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This commit is contained in:
Henry Schimke
2023-03-30 10:41:19 -05:00
parent ae5539e270
commit 71ae1e96a1
1 changed files with 59 additions and 41 deletions
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100
src/qrcode/cpp_port/bitmatrix_parser.rs
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@@ -6,7 +6,7 @@
use crate::{
common::{BitMatrix, Result},
qrcode::decoder::{FormatInformation, Version, VersionRef},
qrcode::decoder::{ErrorCorrectionLevel, FormatInformation, Version, VersionRef},
Exceptions,
};
@@ -176,49 +176,67 @@ pub fn ReadMQRCodewords(
version: VersionRef,
formatInfo: &FormatInformation,
) -> Result<Vec<u8>> {
todo!()
// BitMatrix functionPattern = version.buildFunctionPattern();
let functionPattern = version.buildFunctionPattern()?;
// // D3 in a Version M1 symbol, D11 in a Version M3-L symbol and D9
// // in a Version M3-M symbol is a 2x2 square 4-module block.
// // See ISO 18004:2006 6.7.3.
// bool hasD4mBlock = version.versionNumber() % 2 == 1;
// int d4mBlockIndex =
// version.versionNumber() == 1 ? 3 : (formatInfo.ecLevel == QRCode::ErrorCorrectionLevel::Low ? 11 : 9);
// D3 in a Version M1 symbol, D11 in a Version M3-L symbol and D9
// in a Version M3-M symbol is a 2x2 square 4-module block.
// See ISO 18004:2006 6.7.3.
let hasD4mBlock = version.getVersionNumber() % 2 == 1;
let d4mBlockIndex = if version.getVersionNumber() == 1 {
3
} else {
(if formatInfo.error_correction_level == ErrorCorrectionLevel::L {
11
} else {
9
})
};
// 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) {
// // 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, true) != getBit(bitMatrix, xx, y, formatInfo.isMirrored));
// ++bitsRead;
// // If we've made a whole byte, save it off; save early if 2x2 data block.
// if (bitsRead == 8 || (bitsRead == 4 && hasD4mBlock && Size(result) == d4mBlockIndex - 1)) {
// result.push_back(std::exchange(currentByte, 0));
// bitsRead = 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) {
// 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, Some(true))
!= getBit(bitMatrix, xx, y, Some(formatInfo.isMirrored)),
);
bitsRead += 1;
// If we've made a whole byte, save it off; save early if 2x2 data block.
if (bitsRead == 8
|| (bitsRead == 4 && hasD4mBlock && (result.len()) == d4mBlockIndex - 1))
{
result.push(std::mem::take(&mut currentByte));
bitsRead = 0;
}
}
}
}
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 ReadCodewords(