decrease analysis resolution and use yuv

stratumauth · Jun 12, 2024 · a940a28 · a940a28
1 parent f0e5b8a
commit a940a28
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/AuthenticatorPro.Droid/src/Activity/ScanActivity.cs b/AuthenticatorPro.Droid/src/Activity/ScanActivity.cs
@@ -49,7 +49,7 @@ protected override async void OnCreate(Bundle savedInstanceState)
 
             var analysis = new ImageAnalysis.Builder()
                 .SetBackpressureStrategy(ImageAnalysis.StrategyKeepOnlyLatest)
-                .SetOutputImageFormat(ImageAnalysis.OutputImageFormatRgba8888)
+                .SetOutputImageFormat(ImageAnalysis.OutputImageFormatYuv420888)
                 .Build();
 
             var analyser = new QrCodeImageAnalyser();

diff --git a/AuthenticatorPro.Droid/src/QrCode/QrCodeImageAnalyser.cs b/AuthenticatorPro.Droid/src/QrCode/QrCodeImageAnalyser.cs
@@ -14,13 +14,14 @@ namespace AuthenticatorPro.Droid.QrCode
     public class QrCodeImageAnalyser : Java.Lang.Object, ImageAnalysis.IAnalyzer
     {
         public event EventHandler<string> QrCodeScanned;
-        public Size DefaultTargetResolution => new(1920, 1080);
+        public Size DefaultTargetResolution => new(640, 480);
 
         private readonly ILogger _log = Log.ForContext<QrCodeImageAnalyser>();
 
         private readonly QrCodeReader _qrCodeReader = new(new ReaderOptions
         {
             TryRotate = true,
+            TryHarder = true,
             Binarizer = Binarizer.LocalAverage
         });
 
@@ -48,7 +49,7 @@ private void AnalyseInternal(IImageProxy imageProxy)
             var bytes = new byte[plane.Buffer.Capacity()];
             plane.Buffer.Get(bytes);
 
-            using var imageView = new ImageView(bytes, imageProxy.Width, imageProxy.Height, ImageFormat.RGBA);
+            using var imageView = new ImageView(bytes, imageProxy.Width, imageProxy.Height, ImageFormat.Lum, plane.RowStride, plane.PixelStride);
             string result;
 
             try