wireless camera app for Android

Stream a phone's camera to a tablet over WiFi/hotspot.
WebSocket transport with native YUV-to-JPEG encoding,
UDP auto-discovery, remote control (zoom, flash, camera switch,
rotate, mirror) from the viewer.

lib/jpeg_encoder.dart

@@ -0,0 +1,18 @@
+import 'package:camera/camera.dart';
+import 'package:flutter/services.dart';
+
+const _channel = MethodChannel('com.kschappell.external_cam/jpeg');
+
+Future<Uint8List?> encodeJpeg(CameraImage image, {int quality = 50}) async {
+  return _channel.invokeMethod<Uint8List>('encodeJpeg', {
+    'width': image.width,
+    'height': image.height,
+    'y': image.planes[0].bytes,
+    'u': image.planes[1].bytes,
+    'v': image.planes[2].bytes,
+    'yRowStride': image.planes[0].bytesPerRow,
+    'uvRowStride': image.planes[1].bytesPerRow,
+    'uvPixelStride': image.planes[1].bytesPerPixel,
+    'quality': quality,
+  });
+}