Add NV21 support

Update gradle version Change-Id: Idb084370500eaa8102914d2f45e0b883df191fd4
zikzak-wtf · May 11, 2023 · b40e654 · b40e654
1 parent 7aa4332
commit b40e654
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Showing 6 changed files with 198 additions and 130 deletions.
diff --git a/android/src/main/java/dev/zuzu/yuvtransform/YuvtransformPlugin.java b/android/src/main/java/dev/zuzu/yuvtransform/YuvtransformPlugin.java
@@ -1,67 +1,83 @@
 package dev.zuzu.yuvtransform;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Matrix;
+
+import androidx.annotation.NonNull;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 
-import androidx.annotation.NonNull;
-
 import io.flutter.embedding.engine.plugins.FlutterPlugin;
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
 import io.flutter.plugin.common.MethodChannel.Result;
 
-import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
-import android.graphics.Matrix;
-
 
-/** YuvtransformPlugin */
+/**
+ * YuvtransformPlugin
+ */
 public class YuvtransformPlugin implements FlutterPlugin, MethodCallHandler {
-  /// The MethodChannel that will the communication between Flutter and native Android
-  ///
-  /// This local reference serves to register the plugin with the Flutter Engine and unregister it
-  /// when the Flutter Engine is detached from the Activity
-  private MethodChannel channel;
-
-  @Override
-  public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
-    channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "yuvtransform");
-    channel.setMethodCallHandler(this);
-  }
-
-  @Override
-  public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
-    if (call.method.equals("yuvtransform")) {
-     List<byte[]> bytesList = call.argument("platforms");
-      int[] strides = call.argument("strides");
-      int width = call.argument("width");
-      int height = call.argument("height");
-      int quality = call.argument("quality");
-
-      try {
-          byte[] data = YuvConverter.NV21toJPEG(YuvConverter.YUVtoNV21(bytesList, strides, width, height), width, height, 100);
-          Bitmap bitmapRaw = BitmapFactory.decodeByteArray(data, 0, data.length);
-
-          Matrix matrix = new Matrix();
-          matrix.postRotate(90);
-          Bitmap finalbitmap = Bitmap.createBitmap(bitmapRaw, 0, 0, bitmapRaw.getWidth(), bitmapRaw.getHeight(), matrix, true);
-          ByteArrayOutputStream outputStreamCompressed = new ByteArrayOutputStream();
-          finalbitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStreamCompressed);
-
-          result.success(outputStreamCompressed.toByteArray());
-          outputStreamCompressed.close();
-          data = null;
-      } catch (IOException e) {
-          e.printStackTrace();
-      }
-    } else {
-      result.notImplemented();
+    /// The MethodChannel that will the communication between Flutter and native Android
+    ///
+    /// This local reference serves to register the plugin with the Flutter Engine and unregister it
+    /// when the Flutter Engine is detached from the Activity
+    private MethodChannel channel;
+
+    @Override
+    public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
+        channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "yuvtransform");
+        channel.setMethodCallHandler(this);
     }
-  }
 
-  @Override
-  public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
-    channel.setMethodCallHandler(null);
-  }
+    @Override
+    public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
+        int width = call.argument("width");
+        int height = call.argument("height");
+        int quality = call.argument("quality");
+
+        if (call.method.equals("nv21_to_jpeg")) {
+            byte[] bytes = call.argument("bytes");
+
+
+            byte[] data = YuvConverter.NV21toJPEG(bytes, width, height, quality);
+            convertToJPEG(result, quality, data);
+
+        } else if (call.method.equals("yuvtransform")) {
+            List<byte[]> bytesList = call.argument("platforms");
+            int[] strides = call.argument("strides");
+
+            byte[] data = YuvConverter.NV21toJPEG(YuvConverter.YUVtoNV21(bytesList, strides, width, height), width, height, quality);
+            convertToJPEG(result, quality, data);
+
+        } else {
+            result.notImplemented();
+        }
+    }
+
+    private static void convertToJPEG(Result result, int quality, byte[] data) {
+        try {
+            Bitmap bitmapRaw = BitmapFactory.decodeByteArray(data, 0, data.length);
+
+            Matrix matrix = new Matrix();
+            matrix.postRotate(90);
+            Bitmap finalbitmap = Bitmap.createBitmap(bitmapRaw, 0, 0, bitmapRaw.getWidth(), bitmapRaw.getHeight(), matrix, true);
+            ByteArrayOutputStream outputStreamCompressed = new ByteArrayOutputStream();
+            finalbitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStreamCompressed);
+
+            result.success(outputStreamCompressed.toByteArray());
+            outputStreamCompressed.close();
+            data = null;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
+        channel.setMethodCallHandler(null);
+    }
 }
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Fri Jun 23 08:50:38 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
diff --git a/example/lib/yuv_transform_screen.dart b/example/lib/yuv_transform_screen.dart
@@ -23,7 +23,7 @@ class _YuvTransformScreenState extends State<YuvTransformScreen>
     super.initState();
     // Registers the page to observer for life cycle managing.
     _imageResultProcessorService = ImageResultProcessorService();
-    WidgetsBinding.instance?.addObserver(this);
+    WidgetsBinding.instance.addObserver(this);
     _subscription.add(_imageResultProcessorService.queue.listen((event) {
       _isProcessing = false;
     }));
@@ -32,7 +32,7 @@ class _YuvTransformScreenState extends State<YuvTransformScreen>
 
   @override
   void dispose() {
-    WidgetsBinding.instance?.removeObserver(this);
+    WidgetsBinding.instance.removeObserver(this);
     // Dispose all streams!
     _subscription.forEach((element) {
       element.cancel();