Flutter camera image to swift UIimage - ios

Question

I'm developing a custom flutter plugin where I send flutter image camera to swift and create a UIImage using flutter camera plugin (https://pub.dev/packages/camera).
For that, I send the camera image bytes using this method:
startImageStream((CameraImage img) {
sendFrameBytes(bytesList: img.planes.map((plane) {
return plane.bytes;
}).toList(),
)}
Planes contains a single array containing the RGBA bytes of the image.
On the swift code, I get the RGBA bytes as NSArray and create a UIImage like this:
func detectFromFrame1(args:NSDictionary, result:FlutterResult){
var rgbaPlan = args["bytesList"] as! NSArray
let rgbaTypedData = rgbaPlan[0] as! FlutterStandardTypedData
let rgbaUint8 = [UInt8](rgbaTypedData.data)
let data = NSData(bytes: rgbaUint8, length: rgbaUint8.count)
let uiimage = UIImage(data: data as Data)
print(uiimage)
}
The problem is rgbaTypedData, rgbaUint8, data are not empty and the created uiimage is always nil, I don't understand where the problem is.

Answer 1

I have the same issue. A workaround I use is to convert the image to jpg in flutter and get and give the bytes to the iOS / native code.
The downside is, that it's slow and not usable for real-time use
Update:
Code Sample (Flutter & TFLite package)
Packages:
https://pub.dev/packages/image and
https://pub.dev/packages/tflite
CODE:
_cameraController.startImageStream((_availableCameraImage)
{
imglib.Image img = imglib.Image.fromBytes(_availableCameraImage.planes[0].width, _availableCameraImage.planes[0].height, _availableCameraImage.planes[0].bytes);
Uint8List imgByte = imglib.encodeJpg(img);
Tfliteswift.detectObjectOnBinary(binary: _availableCameraImage.planes[0].bytes);
}