From 3365a2ce99d1465d1b26052f1ef4c364d6028ad9 Mon Sep 17 00:00:00 2001
From: Astatin3 <77305074+Astatin3@users.noreply.github.com>
Date: Sat, 6 Apr 2024 18:52:25 -0600
Subject: [PATCH] Work on speedier qr code scanning.

---
 app/build.gradle.kts                          |  23 +-
 app/src/main/AndroidManifest.xml              |   1 +
 .../scoutingapp2025/YuvConvertor.java         | 165 +++++++++
 .../astatin3/scoutingapp2025/fileEditor.java  |  11 +-
 .../ui/transfer/TransferFragment.java         |   3 +-
 .../ui/transfer/generatorView.java            |  42 ++-
 .../ui/transfer/qrOverlayView.java            |   7 +-
 .../ui/transfer/scannerView.java              | 340 ++++++++++++++----
 app/src/main/res/layout/fragment_transfer.xml |  43 ++-
 9 files changed, 531 insertions(+), 104 deletions(-)
 create mode 100644 app/src/main/java/com/astatin3/scoutingapp2025/YuvConvertor.java

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5ab980f..e151582 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -51,8 +51,29 @@ dependencies {
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)
 
+    // CameraX\
+//    implementation(libs.camera.core)
+//    implementation(libs.androidx.camera.camera2)
+//    implementation(libs.camera.lifecycle)
+
+    // CameraX View class
+
+    var camerax_version = "1.3.2"
+//    implementation(libs.camera.core)
+//    implementation(libs.androidx.camera.camera2)
+//    implementation(libs.camera.lifecycle)
+    implementation("androidx.camera:camera-core:1.3.2")
+    implementation("androidx.camera:camera-camera2:1.3.2")
+    implementation("androidx.camera:camera-lifecycle:1.3.2")
+    implementation("androidx.camera:camera-view:${camerax_version}")
+//    implementation("com.quickbirdstudios:yuvtomat:1.1.0")
+
+
 //    implementation("com.github.yuriy-budiyev:code-scanner:2.3.0")
 //    implementation("com.github.kenglxn.QRGen:android:3.0.1")
-//    implementation("com.journeyapps:zxing-android-embedded:2.3.0")
+//    implementation("com.github.nisrulz:qreader:2.1.1")
+//    implementation("com.journeyapps:zxing-android-embedded:4.3.0")
+//    implementation("androidx.camera:1.0.0-alpha09")
+//    api("com.otaliastudios:cameraview:2.7.2")
     implementation("com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.3")
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4024ee3..0a47e62 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,6 +14,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.ScoutingApp2025"
+        android:hardwareAccelerated="true"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/YuvConvertor.java b/app/src/main/java/com/astatin3/scoutingapp2025/YuvConvertor.java
new file mode 100644
index 0000000..03a7ad9
--- /dev/null
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/YuvConvertor.java
@@ -0,0 +1,165 @@
+package com.astatin3.scoutingapp2025;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.ImageFormat;
+import android.graphics.YuvImage;
+import android.media.Image;
+import android.renderscript.Allocation;
+import android.renderscript.Element;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicYuvToRGB;
+import android.renderscript.Type;
+
+import androidx.annotation.Nullable;
+
+import java.nio.ByteBuffer;
+
+
+
+public class YuvConvertor {
+    private final Allocation in, out;
+    private final ScriptIntrinsicYuvToRGB script;
+
+    public YuvConvertor(Context context, int width, int height) {
+        RenderScript rs = RenderScript.create(context);
+        this.script = ScriptIntrinsicYuvToRGB.create(
+                rs, Element.U8_4(rs));
+
+        // NV21 YUV image of dimension 4 X 4 has following packing:
+        // YYYYYYYYYYYYYYYYVUVUVUVU
+        // With each pixel (of any channel) taking 8 bits.
+        int yuvByteArrayLength = (int) (width * height * 1.5f);
+        Type.Builder yuvType = new Type.Builder(rs, Element.U8(rs))
+                .setX(yuvByteArrayLength);
+        this.in = Allocation.createTyped(
+                rs, yuvType.create(), Allocation.USAGE_SCRIPT);
+
+        Type.Builder rgbaType = new Type.Builder(rs, Element.RGBA_8888(rs))
+                .setX(width)
+                .setY(height);
+        this.out = Allocation.createTyped(
+                rs, rgbaType.create(), Allocation.USAGE_SCRIPT);
+    }
+
+
+    public Bitmap toBitmap(Image image) {
+        if (image.getFormat() != ImageFormat.YUV_420_888) {
+            throw new IllegalArgumentException("Only supports YUV_420_888.");
+        }
+
+        byte[] yuvByteArray = toNv21(image);
+        in.copyFrom(yuvByteArray);
+        script.setInput(in);
+        script.forEach(out);
+
+        // Allocate memory for the bitmap to return. If you have a reusable Bitmap
+        // I recommending using that.
+        Bitmap bitmap = Bitmap.createBitmap(
+                image.getWidth(), image.getHeight(), Bitmap.Config.ARGB_8888);
+        out.copyTo(bitmap);
+
+        return bitmap;
+    }
+
+    private byte[] toNv21(Image image) {
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        // Order of U/V channel guaranteed, read more:
+        // https://developer.android.com/reference/android/graphics/ImageFormat#YUV_420_888
+        Image.Plane yPlane = image.getPlanes()[0];
+        Image.Plane uPlane = image.getPlanes()[1];
+        Image.Plane vPlane = image.getPlanes()[2];
+
+        ByteBuffer yBuffer = yPlane.getBuffer();
+        ByteBuffer uBuffer = uPlane.getBuffer();
+        ByteBuffer vBuffer = vPlane.getBuffer();
+
+        // Full size Y channel and quarter size U+V channels.
+        int numPixels = (int) (width * height * 1.5f);
+        byte[] nv21 = new byte[numPixels];
+        int idY = 0;
+        int idUV = width * height;
+        int uvWidth = width / 2;
+        int uvHeight = height / 2;
+
+        // Copy Y & UV channel.
+        // NV21 format is expected to have YYYYVU packaging.
+        // The U/V planes are guaranteed to have the same row stride and pixel stride.
+        int uvRowStride = uPlane.getRowStride();
+        int uvPixelStride = uPlane.getPixelStride();
+        int yRowStride = yPlane.getRowStride();
+        int yPixelStride = yPlane.getPixelStride();
+        for(int y = 0; y < height; ++y) {
+            int yOffset = y * yRowStride;
+            int uvOffset = y * uvRowStride;
+
+            for (int x = 0; x < width; ++x) {
+                nv21[idY++] = yBuffer.get(yOffset + x * yPixelStride);
+
+                if (y < uvHeight && x < uvWidth) {
+                    int bufferIndex = uvOffset + (x * uvPixelStride);
+                    // V channel.
+                    nv21[idUV++] = vBuffer.get(bufferIndex);
+                    // U channel.
+                    nv21[idUV++] = uBuffer.get(bufferIndex);
+                }
+            }
+        }
+
+        return nv21;
+    }
+
+    YuvImage toYuvImage(Image image) {
+        if (image.getFormat() != ImageFormat.YUV_420_888) {
+            throw new IllegalArgumentException("Invalid image format");
+        }
+
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        // Order of U/V channel guaranteed, read more:
+        // https://developer.android.com/reference/android/graphics/ImageFormat#YUV_420_888
+        Image.Plane yPlane = image.getPlanes()[0];
+        Image.Plane uPlane = image.getPlanes()[1];
+        Image.Plane vPlane = image.getPlanes()[2];
+
+        ByteBuffer yBuffer = yPlane.getBuffer();
+        ByteBuffer uBuffer = uPlane.getBuffer();
+        ByteBuffer vBuffer = vPlane.getBuffer();
+
+        // Full size Y channel and quarter size U+V channels.
+        int numPixels = (int) (width * height * 1.5f);
+        byte[] nv21 = new byte[numPixels];
+        int index = 0;
+
+        // Copy Y channel.
+        int yRowStride = yPlane.getRowStride();
+        int yPixelStride = yPlane.getPixelStride();
+        for(int y = 0; y < height; ++y) {
+            for (int x = 0; x < width; ++x) {
+                nv21[index++] = yBuffer.get(y * yRowStride + x * yPixelStride);
+            }
+        }
+
+        // Copy VU data; NV21 format is expected to have YYYYVU packaging.
+        // The U/V planes are guaranteed to have the same row stride and pixel stride.
+        int uvRowStride = uPlane.getRowStride();
+        int uvPixelStride = uPlane.getPixelStride();
+        int uvWidth = width / 2;
+        int uvHeight = height / 2;
+
+        for(int y = 0; y < uvHeight; ++y) {
+            for (int x = 0; x < uvWidth; ++x) {
+                int bufferIndex = (y * uvRowStride) + (x * uvPixelStride);
+                // V channel.
+                nv21[index++] = vBuffer.get(bufferIndex);
+                // U channel.
+                nv21[index++] = uBuffer.get(bufferIndex);
+            }
+        }
+        return new YuvImage(
+                nv21, ImageFormat.NV21, width, height, /* strides= */ null);
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/fileEditor.java b/app/src/main/java/com/astatin3/scoutingapp2025/fileEditor.java
index 0d5171e..4e9a740 100644
--- a/app/src/main/java/com/astatin3/scoutingapp2025/fileEditor.java
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/fileEditor.java
@@ -5,7 +5,6 @@ import android.util.Log;
 
 import com.astatin3.scoutingapp2025.Utils.frcMatch;
 import com.astatin3.scoutingapp2025.Utils.frcTeam;
-
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
@@ -78,10 +77,10 @@ public final class fileEditor {
 
 
     public static byte[] getByteBlock(byte[] bytes, int start, int end){
-        byte[] dataBlock = new byte[end-start]  ;
+        byte[] dataBlock = new byte[end-start];
 
         for(int a=start;a<end;a++){
-            Log.i("test", start+", "+a+", "+end);
+//            Log.i("test", start+", "+a+", "+end);
             dataBlock[a-start] = bytes[a];
         }
 
@@ -113,9 +112,11 @@ public final class fileEditor {
         byte[] buffer = new byte[maxCompressedBlockSize];
 
 
-
-        while (!inflater.finished()) {
+        while (inflater.getRemaining() > 0) {
             int decompressedSize = inflater.inflate(buffer);
+            if (decompressedSize == 0) {
+                break;
+            }
             outputStream.write(buffer, 0, decompressedSize);
         }
 
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/TransferFragment.java b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/TransferFragment.java
index 94c5e72..31ba86d 100644
--- a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/TransferFragment.java
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/TransferFragment.java
@@ -27,6 +27,7 @@ public class TransferFragment extends Fragment {
         alert.setCancelable(true);
         alert.create().show();
     }
+
     @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@@ -53,7 +54,7 @@ public class TransferFragment extends Fragment {
             public void onClick(View v) {
                 binding.selectLayout.setVisibility(View.GONE);
                 binding.scannerLayout.setVisibility(View.VISIBLE);
-                binding.scannerLayout.start(binding);
+                binding.scannerLayout.start(binding, getViewLifecycleOwner());
             }
         });
         binding.TBAButton.setOnClickListener(new View.OnClickListener() {
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/generatorView.java b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/generatorView.java
index 585bf7b..6e6df2d 100644
--- a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/generatorView.java
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/generatorView.java
@@ -15,8 +15,10 @@ import androidx.constraintlayout.widget.ConstraintLayout;
 
 import com.astatin3.scoutingapp2025.databinding.FragmentTransferBinding;
 import com.astatin3.scoutingapp2025.fileEditor;
+
 import com.google.zxing.BarcodeFormat;
 import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
 import com.google.zxing.WriterException;
 import com.google.zxing.common.BitMatrix;
 import com.google.zxing.qrcode.QRCodeWriter;
@@ -38,7 +40,7 @@ public class generatorView extends ConstraintLayout {
 
     private final int maxQrCount = 256; //The max number that can be stored in a byte
 
-    private final int maxQrSpeed = 20;
+    private final int maxQrSpeed = 5;
     private final int minQrSpeed = 300 + maxQrSpeed - 1;
 
     private int minQrSize = 0;
@@ -64,32 +66,42 @@ public class generatorView extends ConstraintLayout {
         super(context, attributeSet);
     }
 
-    public static Bitmap generateQrCode(String myCodeText) throws WriterException {
+    private Bitmap generateQrCode(String contents) throws WriterException {
 
-        QRCodeWriter qrCodeWriter = new QRCodeWriter();
+        final int size = 512;
+
+        if (contents == null) {
+            return null;
+        }
 
         Map<EncodeHintType, Object> hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
+
+        // The Charset must be UTF-8, Or data will not be transferred properly. IDK why.
         hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
-        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // H = 30% damage
-//        hints.put(EncodeHintType.QR_COMPACT, true);
+        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
         hints.put(EncodeHintType.MARGIN, 0); /* default = 4 */
+        MultiFormatWriter writer = new MultiFormatWriter();
 
-        int size = 512;
-
-        BitMatrix bitMatrix = qrCodeWriter.encode(myCodeText, BarcodeFormat.QR_CODE, size, size, hints);
-
-        int width = bitMatrix.getWidth();
-        int height = bitMatrix.getHeight();
+        BitMatrix result;
+        try {
+            result = writer.encode(contents, BarcodeFormat.QR_CODE, size, size, hints);
+        } catch (IllegalArgumentException iae) {
+            // Unsupported format
+            return null;
+        }
 
+        int width = result.getWidth();
+        int height = result.getHeight();
         int[] pixels = new int[width * height];
         for (int y = 0; y < height; y++) {
             int offset = y * width;
             for (int x = 0; x < width; x++) {
-                pixels[offset + x] = bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE;
+                pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.WHITE;
             }
         }
 
-        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        Bitmap bitmap = Bitmap.createBitmap(width, height,
+                Bitmap.Config.ARGB_8888);
         bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
 
         return bitmap;
@@ -132,6 +144,8 @@ public class generatorView extends ConstraintLayout {
                         StandardCharsets.ISO_8859_1) +
 
                     compressedBlock;
+
+
         }
 
 //        byte[] tempData = fileEditor.compress(inputData);
@@ -209,6 +223,7 @@ public class generatorView extends ConstraintLayout {
                                 String.valueOf(fileEditor.byteToChar(qrCount-1)) +
                                 data.substring(start, end)
                 ));
+//                alert("title", ""+(qrCount-1));
             }catch (WriterException e){
                 e.printStackTrace();
             }
@@ -222,7 +237,6 @@ public class generatorView extends ConstraintLayout {
 
     private void updateQr(){
         qrImage.setImageBitmap(qrBitmaps.get(qrIndex));
-        Log.i("test", qrIndex+", "+qrCount);
         if(qrDelay > 0) {
             this.qrIndex += 1;
             if (this.qrIndex >= this.qrCount) {
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/qrOverlayView.java b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/qrOverlayView.java
index c934fdb..8cf2a91 100644
--- a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/qrOverlayView.java
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/qrOverlayView.java
@@ -17,7 +17,6 @@ public class qrOverlayView extends View {
         int[] barColors;
         private Paint paint;
         private final int barHeight = 50;
-        private final int barMargin = 5;
 
         public qrOverlayView(Context context) {
             super(context);
@@ -63,12 +62,14 @@ public class qrOverlayView extends View {
 
                 final int top = 0;
                 final int bottom = barHeight;
+                final int margin = 5*(int)((double)width/getWidth());
 
                 for(int i=0;i<barColors.length;i++){
 
                     final int num = barColors[i];
 
                     int c = Color.RED;
+
                     if(num == 2){
                         c = Color.GREEN;
                     }else if(num == 1){
@@ -79,8 +80,8 @@ public class qrOverlayView extends View {
                     p.setColor(c);
 
                     canvas.drawRect(new Rect(
-                            (i*width)+barMargin, top+barMargin,
-                            ((i+1)*width)-barMargin, bottom-barMargin
+                            (i*width), top,
+                            ((i+1)*width), bottom
                     ), p);
                 }
             }
diff --git a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/scannerView.java b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/scannerView.java
index 2d02c68..3f3843c 100644
--- a/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/scannerView.java
+++ b/app/src/main/java/com/astatin3/scoutingapp2025/ui/transfer/scannerView.java
@@ -1,49 +1,101 @@
 package com.astatin3.scoutingapp2025.ui.transfer;
 
+import static android.view.Surface.ROTATION_0;
+import static androidx.core.math.MathUtils.clamp;
+
 import android.app.ActionBar;
 import android.app.AlertDialog;
 import android.content.Context;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.ImageFormat;
+import android.graphics.Paint;
 import android.graphics.PointF;
+import android.graphics.YuvImage;
+import android.media.Image;
+import android.os.Handler;
+import android.os.SystemClock;
+import android.renderscript.Element;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicYuvToRGB;
 import android.util.AttributeSet;
 import android.util.Log;
+import android.util.Size;
+import android.view.Surface;
 import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
+import androidx.camera.core.AspectRatio;
+import androidx.camera.core.Camera;
+import androidx.camera.core.CameraSelector;
+import androidx.camera.core.ExperimentalGetImage;
+import androidx.camera.core.ImageAnalysis;
+import androidx.camera.core.ImageProxy;
+import androidx.camera.core.Preview;
+import androidx.camera.core.impl.CameraFilters;
+import androidx.camera.lifecycle.ProcessCameraProvider;
 import androidx.constraintlayout.widget.ConstraintLayout;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleOwner;
 
+import com.astatin3.scoutingapp2025.YuvConvertor;
 import com.astatin3.scoutingapp2025.databinding.FragmentTransferBinding;
 import com.astatin3.scoutingapp2025.fileEditor;
-import com.dlazaro66.qrcodereaderview.QRCodeReaderView;
 
+import com.dlazaro66.qrcodereaderview.QRCodeReaderView;
+import com.google.common.util.concurrent.ListenableFuture;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 import java.util.zip.DataFormatException;
 
+//public class scannerView extends androidx.appcompat.widget.AppCompatImageView {
 public class scannerView extends ConstraintLayout {
-    public static class fixedQRCodeReaderView extends QRCodeReaderView {
-        public fixedQRCodeReaderView(Context context) {
-            super(context, null);
-        }
-    }
+//    public static class fixedQRCodeReaderView extends QRCodeReaderView {
+//        public fixedQRCodeReaderView(Context context) {
+//            super(context, null);
+//        }
+//    }
 
     private QRCodeReaderView qrCodeReaderView;
     private qrOverlayView qrOverlayView;
-    private String[] qrDataArr;
+    private Handler uiHandler;
+    private ScriptIntrinsicYuvToRGB script;
+    private YuvConvertor yuvConvertor;
 
-    private int randID;
-
-    private class codeReadListener implements QRCodeReaderView.OnQRCodeReadListener {
-        @Override
-        public void onQRCodeRead(String text, PointF[] points) {
-            qrOverlayView.setPoints(points);
-
-            compileData(
-                fileEditor.byteFromChar(text.charAt(0)),
-                fileEditor.byteFromChar(text.charAt(1)),
-                fileEditor.byteFromChar(text.charAt(2)),
-                (fileEditor.byteFromChar(text.charAt(3))+1),
-                text.substring(4)
-            );
-        }
-    }
+//    private class codeReadListener implements QRCodeReaderView.OnQRCodeReadListener {
+//        @Override
+//        public void onQRCodeRead(String text, PointF[] points) {
+//            qrOverlayView.setPoints(points);
+//
+////            alert("Info", ""+(fileEditor.byteFromChar(text.charAt(3))+1));
+//
+//            compileData(
+//                fileEditor.byteFromChar(text.charAt(0)),
+//                fileEditor.byteFromChar(text.charAt(1)),
+//                fileEditor.byteFromChar(text.charAt(2)),
+//                (fileEditor.byteFromChar(text.charAt(3))+1),
+//                text.substring(4)
+//            );
+//        }
+//    }
 
     private void alert(String title, String content) {
         AlertDialog.Builder alert = new AlertDialog.Builder(getContext());
@@ -62,39 +114,185 @@ public class scannerView extends ConstraintLayout {
         super(context, attributeSet);
     }
 
-    public void start(FragmentTransferBinding binding){
-        qrCodeReaderView = new QRCodeReaderView(getContext());
-        this.addView(qrCodeReaderView);
-        ConstraintLayout.LayoutParams qrCodeReaderViewParams = (ConstraintLayout.LayoutParams) qrCodeReaderView.getLayoutParams();
-        qrCodeReaderViewParams.width = ActionBar.LayoutParams.MATCH_PARENT;
-        qrCodeReaderViewParams.height = ActionBar.LayoutParams.MATCH_PARENT;
-        qrCodeReaderView.setLayoutParams(qrCodeReaderViewParams);
+    private float scale = 0;
+    private double threshhold = 0.5;
+    private FragmentTransferBinding binding;
+    private LifecycleOwner lifecycle;
 
-        qrOverlayView = new qrOverlayView(getContext());
-        qrOverlayView.bringToFront();
-        this.addView(qrOverlayView);
-        ConstraintLayout.LayoutParams pointsOverlayViewParams = (ConstraintLayout.LayoutParams) qrCodeReaderView.getLayoutParams();
-        pointsOverlayViewParams.width = ActionBar.LayoutParams.MATCH_PARENT;
-        pointsOverlayViewParams.height = ActionBar.LayoutParams.MATCH_PARENT;
-        qrOverlayView.setLayoutParams(pointsOverlayViewParams);
-
-
-        qrCodeReaderView.startCamera();
-
-//        qrCodeReaderView = (QRCodeReaderView) binding.qrdecoderview;
-        qrCodeReaderView.setOnQRCodeReadListener(new codeReadListener());
-//        qrCodeReaderView.setQRDecodingEnabled(true);
-        qrCodeReaderView.setAutofocusInterval(2000L);
-//        qrCodeReaderView.setFrontCamera();
-        qrCodeReaderView.setBackCamera();
-        qrCodeReaderView.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                qrCodeReaderView.forceAutoFocus();
-            }
-        });
+    private void setImage(Bitmap bmp){
+        if(scale == 0) {
+            scale = ((float) ((View) getParent()).getWidth() / bmp.getWidth()) * ((float) 16 / 9);
+            setScaleX(scale);
+            setScaleY(scale);
+        }
+        binding.scannerImage.setImageBitmap(bmp);
+        binding.scannerThreshold.bringToFront();
     }
 
+    private Bitmap toGreyscale(Bitmap originalBitmap){
+        int width = originalBitmap.getWidth();
+        int height = originalBitmap.getHeight();
+
+        Bitmap oneBitBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(oneBitBitmap);
+        Paint paint = new Paint();
+        paint.setColorFilter(new ColorMatrixColorFilter(new ColorMatrix(new float[] {
+                0.299f, 0.587f, 0.114f, 0, 0,
+                0.299f, 0.587f, 0.114f, 0, 0,
+                0.299f, 0.587f, 0.114f, 0, 0,
+                0,      0,      0,      1, 0
+        })));
+
+        canvas.drawBitmap(originalBitmap, 0, 0, paint);
+
+        int[] pixels = new int[width * height];
+        oneBitBitmap.getPixels(pixels, 0, width, 0, 0, width, height);
+
+        int[] oneBitPixels = new int[width * height];
+        int threshold = 128; // Adjust this value to change the threshold
+
+        for (int i = 0; i < pixels.length; i++) {
+            int pixel = pixels[i];
+            int red = Color.red(pixel);
+            int green = Color.green(pixel);
+            int blue = Color.blue(pixel);
+            int average = (red + green + blue) / 3;
+            oneBitPixels[i] = (average > threshold) ? Color.WHITE : Color.BLACK;
+        }
+
+        oneBitBitmap.setPixels(oneBitPixels, 0, width, 0, 0, width, height);
+
+        return oneBitBitmap;
+    }
+
+    public void start(FragmentTransferBinding binding, LifecycleOwner lifecycle){
+        this.binding = binding;
+        this.lifecycle = lifecycle;
+        yuvConvertor = new YuvConvertor(getContext(), 1280, 720);
+
+        uiHandler = new Handler();
+
+//        IntentIntegrator integrator = IntentIntegrator.forSupportFragment(TransferFragment);
+//        integrator.setPrompt("Scan a QR code");
+//        integrator.setBeepEnabled(true);
+//        integrator.setOrientationLocked(true);
+//        integrator.setCaptureActivity(CaptureActivity.class);
+//        integrator.initiateScan();
+
+
+//        ScanOptions options = new ScanOptions();
+//        options.setDesiredBarcodeFormats(ScanOptions.QR_CODE);
+//        options.setPrompt("Scan a barcode");
+//        options.setCameraId(0);  // Use a specific camera of the device
+//        options.setBeepEnabled(false);
+//        options.setBarcodeImageEnabled(true);
+//        barcodeLauncher.launch(options);
+
+//        qrCodeReaderView = new QRCodeReaderView(getContext());
+//        this.addView(qrCodeReaderView);
+//        ConstraintLayout.LayoutParams qrCodeReaderViewParams = (ConstraintLayout.LayoutParams) qrCodeReaderView.getLayoutParams();
+//        qrCodeReaderViewParams.width = ActionBar.LayoutParams.MATCH_PARENT;
+//        qrCodeReaderViewParams.height = ActionBar.LayoutParams.MATCH_PARENT;
+//        qrCodeReaderView.setLayoutParams(qrCodeReaderViewParams);
+//
+//        qrOverlayView = new qrOverlayView(getContext());
+//        qrOverlayView.bringToFront();
+//        this.addView(qrOverlayView);
+//        ConstraintLayout.LayoutParams pointsOverlayViewParams = (ConstraintLayout.LayoutParams) qrCodeReaderView.getLayoutParams();
+//        pointsOverlayViewParams.width = ActionBar.LayoutParams.MATCH_PARENT;
+//        pointsOverlayViewParams.height = ActionBar.LayoutParams.MATCH_PARENT;
+//        qrOverlayView.setLayoutParams(pointsOverlayViewParams);
+//
+//        Map<DecodeHintType, Object> hints = new EnumMap<DecodeHintType, Object>(DecodeHintType.class);
+//        hints.put(DecodeHintType.POSSIBLE_FORMATS, BarcodeFormat.QR_CODE);
+//        hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
+////        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
+//
+//        qrCodeReaderView.setDecodeHints(hints);
+//
+////        qrCodeReaderView = (QRCodeReaderView) binding.qrdecoderview;
+//        qrCodeReaderView.setOnQRCodeReadListener(new codeReadListener());
+////        qrCodeReaderView.setQRDecodingEnabled(true);
+//        qrCodeReaderView.setAutofocusInterval(2000L);
+////        qrCodeReaderView.setFrontCamera();
+//        qrCodeReaderView.setBackCamera();
+//        qrCodeReaderView.setOnClickListener(new View.OnClickListener() {
+//            @Override
+//            public void onClick(View v) {
+//                qrCodeReaderView.forceAutoFocus();
+//            }
+//        });
+//        qrCodeReaderView.startCamera();
+
+        ListenableFuture<ProcessCameraProvider> cameraProviderFuture
+                = ProcessCameraProvider.getInstance(this.getContext());
+
+        cameraProviderFuture.addListener(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    ProcessCameraProvider cameraProvider = cameraProviderFuture.get();
+                    bindPreview(cameraProvider);
+                } catch (ExecutionException | InterruptedException e) {
+                    // No errors need to be handled for this Future.
+                    // This should never be reached.
+                }
+            }
+        }, ContextCompat.getMainExecutor(this.getContext()));
+    }
+
+    void bindPreview(@NonNull ProcessCameraProvider cameraProvider) {
+
+        Preview preview = new Preview.Builder()
+                .setTargetAspectRatio(AspectRatio.RATIO_16_9)
+                .setTargetRotation(Surface.ROTATION_180)
+                .build();
+
+        CameraSelector cameraSelector = new CameraSelector.Builder()
+                .requireLensFacing(CameraSelector.LENS_FACING_BACK)
+//                .addCameraFilter(CameraFilters.NON)
+                .build();
+
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+
+        ImageAnalysis imageAnalysis = new ImageAnalysis.Builder()
+//                .setTargetResolution(new Size(224, 224))
+                .setOutputImageRotationEnabled(false)
+                .setTargetAspectRatio(AspectRatio.RATIO_16_9)
+                .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
+                .build();
+
+
+        imageAnalysis.setAnalyzer(executor, new ImageAnalysis.Analyzer() {
+            @OptIn(markerClass = ExperimentalGetImage.class) @Override
+            public void analyze(@NonNull ImageProxy image) {
+                Image img = Objects.requireNonNull(image.getImage());
+                Log.i("test", img.getWidth() + ", " + img.getHeight());
+                final Bitmap bmp = yuvConvertor.toBitmap(img);
+                uiHandler.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        setImage(toGreyscale(bmp));
+                    }
+                });
+                image.close();
+            }
+        });
+
+        cameraProvider.unbindAll();
+
+        Camera camera = cameraProvider.bindToLifecycle((LifecycleOwner)lifecycle,
+                cameraSelector, imageAnalysis, preview);
+
+//        preview.setSurfaceProvider(binding.previewView.getSurfaceProvider());
+
+    }
+
+    private String[] qrDataArr;
+    private int qrScannedCount;
+    private int[] barColors;
+    private int randID;
+    private int prevQrIndex;
     private void compileData(int dataVersion, int randID, int qrIndex, int qrCount, String qrData){
         if(dataVersion != fileEditor.internalDataVersion){
             alert("Error", "Incorrect data version");
@@ -105,6 +303,9 @@ public class scannerView extends ConstraintLayout {
         if(randID != this.randID){
             this.randID = randID;
             qrDataArr = new String[qrCount];
+            Log.i("title", ""+qrCount);
+            barColors = new int[qrCount];
+            prevQrIndex = qrIndex;
         }
 
         final boolean updated;
@@ -112,29 +313,16 @@ public class scannerView extends ConstraintLayout {
         if(qrDataArr[qrIndex] == null) {
             qrDataArr[qrIndex] = qrData;
             updated = true;
+            qrScannedCount += 1;
         }else{
             updated = false;
         }
 
-        int count = 0;
-        int[] barColors = new int[qrCount];
-
-        for(int i =0;i<qrCount;i++){
-            if(qrDataArr[i] != null){
-                barColors[i] = 2;
-                count++;
-            }
-
-            if(i == qrIndex){
-                barColors[i] = 1;
-            }else if(qrDataArr[i] == null) {
-                barColors[i] = 0;
-            }
-        }
-
+        barColors[prevQrIndex] = 2;
+        barColors[qrIndex] = 1;
         qrOverlayView.setBar(barColors);
 
-        if(updated && count >= qrCount){
+        if(updated && qrScannedCount >= qrCount){
 
             // I guess String.join does not like non-ascii text
             String compiledData = "";
@@ -142,31 +330,29 @@ public class scannerView extends ConstraintLayout {
                 compiledData += qrDataArr[i];
             }
 
-
             try {
                 byte[] compiledBytes = compiledData.getBytes(StandardCharsets.ISO_8859_1);
+//                alert(count+", "+compiledData.length()+", "+compiledBytes.length, ""+fileEditor.fromBytes(fileEditor.getByteBlock(compiledBytes, 0,2),2));
 //                alert("completed", new String(fileEditor.decompress(compiledBytes), StandardCharsets.ISO_8859_1));
                 alert("completed", blockUncompress(compiledBytes));
             }catch (Exception e){
                 e.printStackTrace();
             }
         }
+        prevQrIndex = qrIndex;
     }
 
     private static String blockUncompress(byte[] data) throws DataFormatException {
         String uncompressedData = "";
         int curIndex = 0;
         while(curIndex < data.length){
-            final int blockLength = fileEditor.fromBytes(fileEditor.getByteBlock(data, curIndex, curIndex+2), 2);
 
-            Log.i("test", ""+blockLength);
+            final int blockLength = fileEditor.fromBytes(fileEditor.getByteBlock(data, curIndex, curIndex+2), 2);
 
             uncompressedData += new String(
                     fileEditor.decompress(
-                            fileEditor.getByteBlock(
-                                    data, curIndex+2, curIndex+blockLength+2)
-                    ), StandardCharsets.ISO_8859_1
-            );
+                            fileEditor.getByteBlock(data, curIndex+2, curIndex+blockLength+2)
+                    ), StandardCharsets.ISO_8859_1);
 
             curIndex += blockLength+2;
         }
diff --git a/app/src/main/res/layout/fragment_transfer.xml b/app/src/main/res/layout/fragment_transfer.xml
index 7fccc2a..de4014a 100644
--- a/app/src/main/res/layout/fragment_transfer.xml
+++ b/app/src/main/res/layout/fragment_transfer.xml
@@ -129,21 +129,58 @@
 
     </com.astatin3.scoutingapp2025.ui.transfer.generatorView>
 
+
     <com.astatin3.scoutingapp2025.ui.transfer.scannerView
         android:id="@+id/scannerLayout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:visibility="gone"
-        tools:visibility="gone" />
+        app:layout_constraintTop_toBottomOf="parent"
+        tools:layout_editor_absoluteX="-62dp"
+        tools:visibility="visible">
+
+
+        <SeekBar
+            android:id="@+id/scannerThreshold"
+            android:layout_width="match_parent"
+            android:layout_height="48dp"
+            android:layout_marginBottom="60dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"/>
+
+        <ImageView
+            android:id="@+id/scannerImage"
+            android:layout_width="fill_parent"
+            android:layout_height="fill_parent"
+            android:layout_centerInParent="true"
+            android:adjustViewBounds="true"
+            android:rotation="90"
+            android:scaleType="fitCenter"
+            android:scaleX="1"
+            android:scaleY="1"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:context=".TransferFragment" />
+
+        <!--        <Switch-->
+        <!--            android:id="@+id/switch1"-->
+        <!--            android:layout_width="wrap_content"-->
+        <!--            android:layout_height="wrap_content"-->
+        <!--            android:text="Switch"-->
+        <!--            tools:ignore="UseSwitchCompatOrMaterialXml" />-->
+
+
+    </com.astatin3.scoutingapp2025.ui.transfer.scannerView>
 
     <com.astatin3.scoutingapp2025.ui.transfer.TBAView
         android:id="@+id/TBAView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_marginBottom="57dp"
         android:fillViewport="true"
         android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"