How to use with ImageStream

[thewh1teagle]

In camera module we have an option to get stream of frames
_controller.startImageStream( CameraImgae image => { } )
How can I decode it from that CameraImage object?
In your example you decode it from Xpic file, but I prefer to decode it with stream because it should be more efficient for live decode

In addition, when I get the results, does it possible to get the positions of each result? like we can in flutter_zxing lib.

[shirne]

1. I add a demo page that decode from CameraImage(yuv data) only test on android e953866
2. Each result has a resultPoints

return points related to the barcode in the image. These are typically points identifying finder patterns or the corners of the barcode. The exact meaning is specific to the type of barcode that was decoded.

[thewh1teagle]

Thank you very much for the example.
I tried it on my machine,
it looks like it takes more than 400ms to decode image.
and that's strange because the original zxing library of flutter takes less than 1ms
My goal is to create animation on the positions of detected qr's in live,
is there a way to reduce the time it takes?

[shirne]

Currently , it's hard.
If you are only use for standard qrcode , you can set single decoder mode and close inverse mode.

Or I recommand you to use mk_kit , there's also some plugin on pub.

[shirne]

@thewh1teagle
I improved CameraImage decode fundation to use a persistent isolate.
And thanks for your remind, decode CameraImage is more faster then a capture image.

[thewh1teagle]

Is it significantly faster? if not, what makes it hard to make it fast as zxing?