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data_mask.rs added

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This commit is contained in:
Henry Schimke
2023-03-30 11:04:45 -05:00
parent 71ae1e96a1
commit 7f675137f2
2 changed files with 30 additions and 22 deletions
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4
src/qrcode/cpp_port/bitmatrix_parser.rs
View File

@@ -149,7 +149,7 @@ pub fn ReadQRCodewords(
// Read a bit
AppendBit(
&mut currentByte,
GetDataMaskBit(formatInfo.data_mask as u32, xx, y, None)
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
@@ -214,7 +214,7 @@ pub fn ReadMQRCodewords(
// Read a bit
AppendBit(
&mut currentByte,
GetDataMaskBit(formatInfo.data_mask as u32, xx, y, Some(true))
GetDataMaskBit(formatInfo.data_mask as u32, xx, y, Some(true))?
!= getBit(bitMatrix, xx, y, Some(formatInfo.isMirrored)),
);
bitsRead += 1;

48
src/qrcode/cpp_port/data_mask.rs
View File

@@ -5,6 +5,8 @@
// SPDX-License-Identifier: Apache-2.0
use crate::common::BitMatrix;
use crate::common::Result;
use crate::Exceptions;
/**
* <p>Encapsulates data masks for the data bits in a QR and micro QR code, per ISO 18004:2006 6.8.</p>
@@ -13,27 +15,33 @@ use crate::common::BitMatrix;
* and j is row position. In fact, as the text says, i is row position and j is column position.</p>
*/
pub fn GetDataMaskBit(maskIndex: u32, x: u32, y: u32, isMicro: Option<bool>) -> bool {
pub fn GetDataMaskBit(maskIndex: u32, x: u32, y: u32, isMicro: Option<bool>) -> Result<bool> {
let isMicro = isMicro.unwrap_or(false);
todo!()
// if (isMicro) {
// if (maskIndex < 0 || maskIndex >= 4)
// throw std::invalid_argument("QRCode maskIndex out of range");
// maskIndex = std::array{1, 4, 6, 7}[maskIndex]; // map from MQR to QR indices
// }
let mut maskIndex = maskIndex;
if (isMicro) {
if (maskIndex < 0 || maskIndex >= 4) {
return Err(Exceptions::illegal_argument_with(
"QRCode maskIndex out of range",
));
}
maskIndex = [1, 4, 6, 7][maskIndex as usize]; // map from MQR to QR indices
}
// switch (maskIndex) {
// case 0: return (y + x) % 2 == 0;
// case 1: return y % 2 == 0;
// case 2: return x % 3 == 0;
// case 3: return (y + x) % 3 == 0;
// case 4: return ((y / 2) + (x / 3)) % 2 == 0;
// case 5: return (y * x) % 6 == 0;
// case 6: return ((y * x) % 6) < 3;
// case 7: return (y + x + ((y * x) % 3)) % 2 == 0;
// }
match (maskIndex) {
0 => return Ok((y + x) % 2 == 0),
1 => return Ok(y % 2 == 0),
2 => return Ok(x % 3 == 0),
3 => return Ok((y + x) % 3 == 0),
4 => return Ok(((y / 2) + (x / 3)) % 2 == 0),
5 => return Ok((y * x) % 6 == 0),
6 => return Ok(((y * x) % 6) < 3),
7 => return Ok((y + x + ((y * x) % 3)) % 2 == 0),
_ => {}
}
// throw std::invalid_argument("QRCode maskIndex out of range");
Err(Exceptions::illegal_argument_with(
"QRCode maskIndex out of range",
))
}
pub fn GetMaskedBit(
@@ -42,6 +50,6 @@ pub fn GetMaskedBit(
y: u32,
maskIndex: u32,
isMicro: Option<bool>,
) -> bool {
return GetDataMaskBit(maskIndex, x, y, isMicro) != bits.get(x, y);
) -> Result<bool> {
Ok(GetDataMaskBit(maskIndex, x, y, isMicro)? != bits.get(x, y))
}