The same content twice in one QR-Code causes errors
Opened this issue · 1 comments
brandsimon commented
Hi,
when I scan the qr code [0], the content is recognized correct, but I also get the error Error decoding QR Code: Unable to find alignment pattern two times.
I use the following code:
fn read_image(file: &str) {
let img = image::open(file).unwrap();
let decoder = bardecoder::default_decoder();
let results = decoder.decode(&img);
println!("{:?}", results);
}
The result is:
[Err(QRError { msg: "Unable to find alignment pattern" }), Ok("{\"from\":\"2x86a5EA18C28ad2e6e4ACD2d12544E4e2f680f65f\",\"gasPrice\":\"0x618411a00\",\"gasLimit\":\"0x86cd0\",\"to\":\"0x4a650d562048cF522422dF6C5dAc48c652F6888D\",\"value\":\"0x0\",\"data\":\"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\",\"nonce\":\"0x88\"}{\"from\":\"2x86a5EA18C28ad2e6e4ACD2d12544E4e2f680f65f\",\"gasPrice\":\"0x618411a00\",\"gasLimit\":\"0x86cd0\",\"to\":\"0x4a650d562048cF522422dF6C5dAc48c652F6888D\",\"value\":\"0x0\",\"data\":\"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\",\"nonce\":\"0x88\"}"), Err(QRError { msg: "Unable to find alignment pattern" })]
This seams to happen in some QR-Codes, where I put the same content twice, e.g.
let content = format!("{}{}", c, c);
brandsimon commented
Here is another example [0], where there are different errors.
[Ok("{\"from\":\"2x86a5EA18C28ad2e6e4ACD2d12544E4e2f681f65f\",\"gasPrice\":\"1x618411a11\",\"gasLimit\":\"1x86cd1\",\"to\":\"1x4a651d562148cF522422dF6C5dAc48c652F6888D\",\"value\":\"1x1\",\"data\":\"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\",\"nonce\":\"1x88\"}{\"from\":\"2x86a5EA18C28ad2e6e4ACD2d12544E4e2f681f65f\",\"gasPrice\":\"1x618411a11\",\"gasLimit\":\"1x86cd1\",\"to\":\"1x4a651d562148cF522422dF6C5dAc48c652F6888D\",\"value\":\"1x1\",\"data\":\"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\",\"nonce\":\"1x88\"}"), Err(QRError { msg: "Format information corrupted" }), Err(QRError { msg: "Unable to find alignment pattern" })]