Better mat fromlist

.github/workflows/build_test_release.yaml

@@ -79,7 +79,7 @@ jobs:
 
   build-ubuntu:
     name: build-ubuntu-android-armv7
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
       - name: setup
@@ -92,7 +92,7 @@ jobs:
             libswscale-dev libgflags-dev \
             libjpeg-dev libpng-dev libtiff-dev python3-pip
 
-          python3 -m pip install conan
+          python3 -m pip install conan --break-system-packages
           conan profile detect -f
       - uses: actions/checkout@v4
         with:

.github/workflows/formatter.yaml

@@ -0,0 +1,24 @@
+on:
+  push:
+  pull_request:
+
+name: Format Code
+
+jobs:
+  build:
+    name: format code
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v1
+      - name: Format code
+        run: |
+          dart format --line-length 110 \
+            $(find lib test -name '*.dart' -not -name '*.g.dart' -and -not -name '*.freezed.dart')
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: "dart format ✅"
+          branch: ${{ github.head_ref }}

conanfile.py

@@ -97,6 +97,8 @@ def build_requirements(self):
         self.tool_requires("cmake/3.28.1")
         if self.settings.os != "Windows":
             self.tool_requires("ninja/1.11.1")
+        # if self.settings.os == "Linux":
+        #     self.tool_requires("ffmpeg/6.1")
         if self.settings.os == "Android":
             ndk_path = os.environ.get("ANDROID_NDK_HOME", None) or os.environ.get(
                 "ANDROID_NDK_ROOT", None

example/lib/main.dart

@@ -40,12 +40,18 @@ class _MyAppState extends State<MyApp> {
           gray = cv.cvtColor(im, cv.COLOR_BGR2GRAY);
           blur = cv.gaussianBlur(im, (7, 7), 2, sigmaY: 2);
         }
-        return (
-          cv.imencode(cv.ImageFormat.png.ext, gray),
-          cv.imencode(cv.ImageFormat.png.ext, blur)
-        );
+        return (cv.imencode(".png", gray), cv.imencode(".png", blur));
       });
 
+  Future<(cv.Mat, cv.Mat)> heavyTaskAsync(cv.Mat im) async {
+    late cv.Mat gray, blur;
+    for (var i = 0; i < 1000; i++) {
+      gray = await cv.cvtColorAsync(im, cv.COLOR_BGR2GRAY);
+      blur = await cv.gaussianBlurAsync(im, (7, 7), 2, sigmaY: 2);
+    }
+    return (gray, blur);
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
@@ -80,9 +86,13 @@ class _MyAppState extends State<MyApp> {
                   final data = await DefaultAssetBundle.of(context).load("images/lenna.png");
                   final bytes = data.buffer.asUint8List();
                   // heavy computation
-                  final (gray, blur) = await heavyTask(bytes);
+                  // final (gray, blur) = await heavyTask(bytes);
+                  // setState(() {
+                  //   images = [bytes, gray, blur];
+                  // });
+                  final (gray, blur) = await heavyTaskAsync(cv.imdecode(bytes, cv.IMREAD_COLOR));
                   setState(() {
-                    images = [bytes, gray, blur];
+                    images = [bytes, cv.imencode(".png", gray), cv.imencode(".png", blur)];
                   });
                 },
                 child: const Text("Process"),

example/test/widget_test.dart

@@ -0,0 +1 @@
+

ffigen.yaml

@@ -15,46 +15,74 @@ sort: true
 headers:
   entry-points:
     - src/calib3d/calib3d.h
+    - src/calib3d/calib3d_async.h
     - src/core/core.h
+    - src/core/core_async.h
     - src/core/exception.h
     - src/core/svd.h
+    - src/core/svd_async.h
+    - src/core/types.h
     - src/core/vec.h
     - src/core/version.h
     - src/dnn/asyncarray.h
     - src/dnn/dnn.h
+    - src/dnn/dnn_async.h
     - src/extra/aruco.h
     - src/extra/img_hash.h
     - src/extra/wechat_qrcode.h
     - src/features2d/features2d.h
+    - src/features2d/features2d_async.h
+    - src/gapi/gapi.h
     - src/highgui/highgui.h
     - src/imgcodecs/imgcodecs.h
+    - src/imgcodecs/imgcodecs_async.h
     - src/imgproc/imgproc.h
+    - src/imgproc/imgproc_async.h
     - src/objdetect/objdetect.h
+    - src/objdetect/objdetect_async.h
     - src/photo/photo.h
+    - src/photo/photo_async.h
     - src/stitching/stitching.h
+    - src/stitching/stitching_async.h
     - src/video/video.h
+    - src/video/video_async.h
     - src/video/videoio.h
+    - src/video/videoio_async.h
   include-directives:
     - src/calib3d/calib3d.h
+    - src/calib3d/calib3d_async.h
     - src/core/core.h
+    - src/core/core_async.h
     - src/core/exception.h
     - src/core/svd.h
+    - src/core/svd_async.h
     - src/core/vec.h
     - src/core/version.h
     - src/dnn/asyncarray.h
     - src/dnn/dnn.h
+    - src/dnn/dnn_async.h
     - src/extra/aruco.h
     - src/extra/img_hash.h
     - src/extra/wechat_qrcode.h
     - src/features2d/features2d.h
+    - src/features2d/features2d_async.h
+    - src/gapi/gapi.h
     - src/highgui/highgui.h
     - src/imgcodecs/imgcodecs.h
+    - src/imgcodecs/imgcodecs_async.h
     - src/imgproc/imgproc.h
+    - src/imgproc/imgproc_async.h
     - src/objdetect/objdetect.h
+    - src/objdetect/objdetect_async.h
     - src/photo/photo.h
+    - src/photo/photo_async.h
     - src/stitching/stitching.h
+    - src/stitching/stitching_async.h
     - src/video/video.h
+    - src/video/video_async.h
     - src/video/videoio.h
+    - src/video/videoio_async.h
+
 functions:
   symbol-address:
     include:

lib/opencv_dart.dart

@@ -1 +1,56 @@
-export 'src/opencv.dart';
+library cv;
+
+export 'src/calib3d/calib3d.dart';
+export 'src/calib3d/calib3d_async.dart';
+export 'src/calib3d/fisheye.dart';
+export 'src/constants.g.dart';
+export 'src/contrib/aruco.dart';
+export 'src/contrib/aruco_dict.dart';
+export 'src/contrib/img_hash.dart';
+export 'src/contrib/wechat_qrcode.dart';
+export 'src/core/array.dart';
+export 'src/core/asyncarray.dart';
+export 'src/core/base.dart';
+export 'src/core/contours.dart';
+export 'src/core/core.dart';
+export 'src/core/core_async.dart';
+export 'src/core/cv_vec.dart';
+export 'src/core/dmatch.dart';
+export 'src/core/error_code.dart';
+export 'src/core/exception.dart';
+export 'src/core/keypoint.dart';
+export 'src/core/mat.dart';
+export 'src/core/mat_async.dart';
+export 'src/core/mat_type.dart';
+export 'src/core/moments.dart';
+export 'src/core/point.dart';
+export 'src/core/rect.dart';
+export 'src/core/rng.dart';
+export 'src/core/rng_async.dart';
+export 'src/core/scalar.dart';
+export 'src/core/size.dart';
+export 'src/core/vec.dart';
+export 'src/dnn/dnn.dart';
+export 'src/dnn/dnn_async.dart';
+export 'src/features2d/features2d.dart';
+export 'src/features2d/features2d_async.dart';
+export 'src/highgui/highgui.dart';
+export 'src/imgcodecs/imgcodecs.dart';
+export 'src/imgcodecs/imgcodecs_async.dart';
+export 'src/imgproc/clahe.dart';
+export 'src/imgproc/clahe_async.dart';
+export 'src/imgproc/imgproc.dart';
+export 'src/imgproc/imgproc_async.dart';
+export 'src/imgproc/subdiv2d.dart';
+export 'src/imgproc/subdiv2d_async.dart';
+export 'src/objdetect/objdetect.dart';
+export 'src/objdetect/objdetect_async.dart';
+export 'src/photo/photo.dart';
+export 'src/photo/photo_async.dart';
+export 'src/stitching/stitching.dart';
+export 'src/stitching/stitching_async.dart';
+export 'src/svd/svd.dart';
+export 'src/video/video.dart';
+export 'src/video/video_async.dart';
+export 'src/video/videoio.dart';
+export 'src/video/videoio_async.dart';

lib/opencv_gapi.dart

@@ -0,0 +1,6 @@
+library cv.gapi;
+
+export 'src/gapi/gapi.dart';
+export 'src/gapi/gcomputation.dart';
+export 'src/gapi/gmat.dart';
+export 'src/gapi/gscalar.dart';