add dnn module

.github/workflows/dart_test.yaml

@@ -27,7 +27,7 @@ jobs:
           dart run opencv_dart:setup -p linux -a x64
 
       - name: Run tests
-        run: flutter test -x skip-workflow
+        run: flutter test -x skip-workflow,no-local-files
 
   test_windows:
     runs-on: windows-latest
@@ -49,4 +49,4 @@ jobs:
         run: |
           $env:PATH = "${{github.workspace}}\windows;${env:PATH}"
           echo "PATH=$env:PATH" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-          flutter test
+          flutter test -x no-local-files

.gitignore

@@ -22,6 +22,7 @@ __pycache__
 *.lib
 .cache/
 small2.mp4
+test/models/
 
 # Files and directories created by pub
 .dart_tool/

CHANGELOG.md

@@ -1,3 +1,9 @@
+## 0.6.0
+
+* add `dnn` module
+* add more friendly error message, use `cv.registerErrorCallback();` before potential error occurring.
+* change return shape of `Mat.toList()` from `(cols, rows)` to `(rows, cols)`
+
 ## 0.5.0
 
 * add `asyncarray`

README.md

@@ -35,7 +35,7 @@ prebuilt binaries.
 | videoio    | :white_check_mark: | :white_check_mark: | VideoIO module          |
 | asyncarray | :white_check_mark: | :white_check_mark: | AsyncArray module       |
 | calib3d    | :white_check_mark: | :white_check_mark: | Calib3D module          |
-| dnn        | :x:                | :x:                | DNN module              |
+| dnn        | :white_check_mark: | :white_check_mark: | DNN module              |
 | photo      | :white_check_mark: | :white_check_mark: | Photo module            |
 | cuda       | :x:                | :x:                | CUDA module             |
 | contrib    | :x:                | :x:                | Contrib module          |

example/test/widget_test.dart

@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:example/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}

ffigen.yaml

@@ -18,6 +18,7 @@ headers:
     - src/gocv/calib3d.h
     - src/gocv/core.h
     - src/gocv/dnn.h
+    - src/gocv/exception.h
     - src/gocv/features2d.h
     - src/gocv/highgui_gocv.h
     - src/gocv/imgcodecs.h
@@ -34,6 +35,7 @@ headers:
     - src/gocv/calib3d.h
     - src/gocv/core.h
     - src/gocv/dnn.h
+    - src/gocv/exception.h
     - src/gocv/features2d.h
     - src/gocv/highgui_gocv.h
     - src/gocv/imgcodecs.h

lib/src/core/asyncarray.dart

@@ -3,8 +3,8 @@ library cv;
 import 'dart:ffi' as ffi;
 
 import 'package:ffi/ffi.dart';
-import 'package:opencv_dart/src/core/cv_exception.dart';
 
+import '../core/exception.dart';
 import '../core/base.dart';
 import '../core/mat.dart';
 import '../opencv.g.dart' as cvg;
@@ -16,6 +16,8 @@ class AsyncArray implements ffi.Finalizable {
     finalizer.attach(this, ptr);
   }
 
+  factory AsyncArray.fromPointer(cvg.AsyncArray ptr) => AsyncArray._(ptr);
+
   factory AsyncArray.empty() {
     final _ptr = _bindings.AsyncArray_New();
     return AsyncArray._(_ptr);
@@ -29,7 +31,7 @@ class AsyncArray implements ffi.Finalizable {
       final dst = Mat.empty();
       final result = _bindings.AsyncArray_GetAsync(ptr, dst.ptr);
       final dartStr = result.cast<Utf8>().toDartString();
-      if (dartStr.length > 0) throw OpenCvDartException("$dartStr");
+      if (dartStr.isNotEmpty) throw OpenCvDartException(dartStr);
       return dst;
     });
   }

lib/src/core/core.dart

@@ -15,6 +15,7 @@ import '../opencv.g.dart' as cvg;
 
 final _bindings = cvg.CvNative(loadNativeLibrary());
 
+
 /// get version
 String openCvVersion() {
   final v = _bindings.openCVVersion().cast<Utf8>().toDartString();