Binary data

[larsfu]

Hello, thanks for providing this library. I'm using Data Matrix codes containing binary data. Is it somehow possible to get a QByteArray instead of a QString back from decodeImage?

[ftylitak]

Hello @Fujnky

after receiving the result from decodeImage that is a QString, can't you just use QString::toLocal8Bit() ?

[larsfu]

Unfortunately the string terminates at the first null byte, therefore it's not possible that way.

Am 05.03.2018 10:13 nachm. schrieb "Nikolaos Ftylitakis" < [email protected]>:

Hello @Fujnky https://github.com/fujnky

after receiving the result from decodeImage that is a QString, can't you just use QString::toLocal8Bit() http://doc.qt.io/qt-5/qstring.html#toLocal8Bit ?

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[ftylitak]

I have created a new branch over the name "emitTagRawBytes" to test this functionality.

Now, when a tag is detected, it also emits the following signal:

void tagFound(QByteArray tagRawBytes);

Could you please check if this works for you?

[larsfu]

Thanks for your efforts! It does emit some binary data, but it's rather strange. This data matrix contains "hello", which translates to 68656c6c6f in hexadecimal. That’s also what I get by calling decoder.decodeImage(img).toLatin1().toHex(); (which works fine this time, because there’s no null byte). But when I try it this way:

QObject::connect(&decoder, 
                 QOverload<QByteArray>::of(&QZXing::tagFound),
                 this,
                 [](QByteArray barcode){
                     qDebug() << barcode.toHex();
                 }
);

I get 69666d6d7081a138ce65fb932ac057ed851cb249df76. No idea where the error lies..