add opencv native call

.gitignore

@@ -41,3 +41,4 @@ app.*.map.json
 /android/app/debug
 /android/app/profile
 /android/app/release
+/native_cv/android/OpenCV-android-sdk

.vscode/c_cpp_properties.json

@@ -0,0 +1,21 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ],
+            "windowsSdkVersion": "10.0.22621.0",
+            "compilerPath": "cl.exe",
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "windows-msvc-x64"
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "cmake.sourceDirectory": "C:/Users/29230/Code/Flutter/majang_calcu/native_cv/src",
+    "C_Cpp.errorSquiggles": "disabled",
+}

lib/opencv/version_page.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+import "package:native_cv/native_cv.dart";
+
+class VersionPage extends StatelessWidget {
+  NativeCv _nativeCv = NativeCv();
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(
+        appBar: AppBar(
+          title: const Text('Plugin example app'),
+        ),
+        body: Center(
+          child: Text('${_nativeCv.toString()}\n'
+              'OpenCV: ${_nativeCv.getOpenCvVersion()}\n'),
+        ),
+      ),
+    );
+  }
+}

native_cv/.gitignore

@@ -0,0 +1,29 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

native_cv/.metadata

@@ -0,0 +1,33 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "2663184aa79047d0a33a14a3b607954f8fdd8730"
+  channel: "stable"
+
+project_type: plugin
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+      base_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+    - platform: android
+      create_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+      base_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+    - platform: ios
+      create_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+      base_revision: 2663184aa79047d0a33a14a3b607954f8fdd8730
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

native_cv/CHANGELOG.md

@@ -0,0 +1,3 @@
+## 0.0.1
+
+* TODO: Describe initial release.

native_cv/LICENSE

@@ -0,0 +1 @@
+TODO: Add your license here.

native_cv/README.md

@@ -0,0 +1,15 @@
+# native_cv
+
+A new Flutter plugin project.
+
+## Getting Started
+
+This project is a starting point for a Flutter
+[plug-in package](https://flutter.dev/to/develop-plugins),
+a specialized package that includes platform-specific implementation code for
+Android and/or iOS.
+
+For help getting started with Flutter development, view the
+[online documentation](https://docs.flutter.dev), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.
+

native_cv/analysis_options.yaml

@@ -0,0 +1,4 @@
+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

native_cv/android/.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.cxx

native_cv/android/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.10.2)
+set(OpenCV_STATIC ON)
+set(OpenCV_DIR "./OpenCV-android-sdk/sdk/native/jni")
+find_package(OpenCV REQUIRED)
+add_library(native_cv
+            SHARED
+            ../src/native.cpp )
+find_library(
+        log-lib
+        log)
+target_link_libraries( 
+        native_cv
+        ${OpenCV_LIBS}
+        ${log-lib})

native_cv/android/build.gradle

@@ -0,0 +1,74 @@
+group = "com.korisama.native_cv"
+version = "1.0-SNAPSHOT"
+
+buildscript {
+    ext.kotlin_version = "1.8.22"
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath("com.android.tools.build:gradle:8.1.0")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+apply plugin: "com.android.library"
+apply plugin: "kotlin-android"
+
+android {
+    if (project.android.hasProperty("namespace")) {
+        namespace = "com.korisama.native_cv"
+    }
+
+    compileSdk = 34
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8
+    }
+
+    externalNativeBuild {
+        cmake {
+            path "CMakeLists.txt"
+        }
+    }
+
+    sourceSets {
+        main.java.srcDirs += "src/main/kotlin"
+        test.java.srcDirs += "src/test/kotlin"
+    }
+
+    defaultConfig {
+        minSdk = 21
+    }
+
+    dependencies {
+        testImplementation("org.jetbrains.kotlin:kotlin-test")
+        testImplementation("org.mockito:mockito-core:5.0.0")
+    }
+
+    testOptions {
+        unitTests.all {
+            useJUnitPlatform()
+
+            testLogging {
+               events "passed", "skipped", "failed", "standardOut", "standardError"
+               outputs.upToDateWhen {false}
+               showStandardStreams = true
+            }
+        }
+    }
+}

native_cv/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists