The QR Code, encoded as a string. Use qrcodegen.getSize() and qrcodegen.getPixel() to extract data from the result. If the text cannot be represented within the given version range (for example it is too long) then nil is returned.

It takes an MIT licensed QRCode generator written in C (qrcodegen.c), tweaks it to compile for Playdate and provides a Lua wrapper. This is fast enough to do real-time QRCode generation (no async callbacks required). Speed-up is 75-150x over the playdate.graphics.generateQRCode in the SDK, depending on length:


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Notice that we do not define the types of QrCode and QrCodeEcc - the reason is, they come from the qrcodegen crate and we simply resurface them over FFI, which is very cool. Because of the need of using Arc on object instances, this is not always possible, but it works in this case. e24fc04721

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