diff --git a/.github/workflows/android.yaml b/.github/workflows/android.yaml
deleted file mode 100644
index 11ad0691..00000000
--- a/.github/workflows/android.yaml
+++ /dev/null
@@ -1,66 +0,0 @@
-name: android
-
-on:
-  push:
-    tags:
-      - "v*.*.*"
-  pull_request:
-    branches: [ "main" ]
-
-jobs:
-  android:
-    name: android
-    runs-on: ubuntu-24.04
-    strategy:
-      matrix:
-        abi: [armeabi-v7a, arm64-v8a, x86_64]
-    env:
-      COMMON_CMAKE_OPTIONS: |
-        -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_LATEST_HOME/build/cmake/android.toolchain.cmake \
-        -DANDROID_USE_LEGACY_TOOLCHAIN_FILE=False \
-        -DANDROID_PLATFORM=android-24 \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DANDROID_STL=c++_static \
-        -DANDROID_ARM_NEON=ON \
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          repository: 'rainyl/dartcv'
-          ref: 'main'
-      - name: build
-        run: |
-          mkdir build && cd build
-          cmake -S ${{ github.workspace }} \
-          ${{ env.COMMON_CMAKE_OPTIONS }} -DANDROID_ABI="${{ matrix.abi }}" \
-            -DCMAKE_INSTALL_PREFIX="${{ matrix.abi }}" \
-
-          cmake --build . --config Release -j $(nproc)
-          cmake --build . --config Release --target install
-      - uses: actions/upload-artifact@v4
-        name: upload
-        with:
-          path: build/${{ matrix.abi }}
-          name: libdartcv-android-${{ matrix.abi }}
-
-  release:
-    name: android
-    runs-on: ubuntu-24.04
-    steps:
-      - name: download
-        uses: actions/download-artifact@v4
-        with:
-          path: libdartcv-android
-          pattern: libdartcv-android*
-          merge-multiple: true
-      - name: package
-        run: |
-          ls -R libdartcv-android
-          tar -C libdartcv-android -zcvf libdartcv-android.tar.gz .
-      - name: release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          draft: true
-          prerelease: false
-          files: |
-            libdartcv-android.tar.gz
diff --git a/.github/workflows/apple.yaml b/.github/workflows/apple.yaml
deleted file mode 100644
index 23895aaa..00000000
--- a/.github/workflows/apple.yaml
+++ /dev/null
@@ -1,174 +0,0 @@
-name: apple
-
-on:
-  push:
-    tags:
-      - "v*.*.*"
-  pull_request:
-    branches: [ "main" ]
-
-env:
-  IOS_DEPLOYMENT_TARGET: '11.0'
-  MAC_DEPLOYMENT_TARGET: '11.0'
-  ENABLE_BITCODE: OFF
-  ENABLE_ARC: OFF
-  ENABLE_VISIBILITY: OFF
-
-jobs:
-  macos:
-    name: macos
-    strategy:
-      matrix:
-        osname:
-          - {os: macos-13, arch: x64, platform: MAC}
-          - {os: macos-14, arch: arm64, platform: MAC_ARM64}
-    runs-on: ${{ matrix.osname.os }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - name: setup
-        run: |
-          brew install --force --overwrite ninja ccache ffmpeg@6 nasm
-          brew link --overwrite ffmpeg@6
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv.full"
-          tag: "4.10.0+6"
-          fileName: "libopencv-macos-${{ matrix.osname.arch }}.tar.gz"
-          out-file-path: "build/opencv"
-          extract: true
-      - name: build
-        run: |
-          cd build
-          cmake -S ${{ github.workspace }} \
-          -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/profiles/ios.toolchain.cmake \
-          -DDEPLOYMENT_TARGET=$MAC_DEPLOYMENT_TARGET \
-          -DENABLE_BITCODE=$ENABLE_BITCODE \
-          -DENABLE_ARC=$ENABLE_ARC \
-          -DENABLE_VISIBILITY=$ENABLE_VISIBILITY \
-          -DCMAKE_INSTALL_PREFIX=install \
-          -DCMAKE_BUILD_TYPE=Release \
-          -DPLATFORM=${{ matrix.osname.platform }} \
-          -DCVD_PLATFORM_INSTALL_DIR="${{ github.workspace }}/macos" \
-          -DOpenCV_DIR=${{ github.workspace }}/build/opencv/lib/cmake/opencv4
-
-          cmake --build . --config Release --target install
-      - name: package
-        run: |
-          tar -C build/install -zcvf libopencv_dart-macos-${{ matrix.osname.arch }}.tar.gz .
-      - uses: actions/upload-artifact@v4
-        name: upload
-        with:
-          path: build/install/libopencv_dart.dylib
-          name: libopencv_dart-macos-${{ matrix.osname.arch }}
-      - uses: subosito/flutter-action@v2
-        with:
-          flutter-version: '3.19.6'
-          channel: "stable"
-      - name: test
-        run: |
-          export OPENCV_DART_LIB_PATH="${{github.workspace}}/macos/libopencv_dart.dylib"
-          dart pub get
-          dart test -x skip-workflow,no-local-files
-      - name: release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          draft: true
-          prerelease: false
-          files: |
-            libopencv_dart-macos-${{ matrix.osname.arch }}.tar.gz
-  release:
-    permissions:
-      contents: write  # for softprops/action-gh-release to create a release
-    needs: [macos]
-    runs-on: macos-14
-    steps:
-    - name: download
-      uses: actions/download-artifact@v4
-      with:
-        path: artifacts
-        pattern: libopencv_dart-macos-*
-        merge-multiple: false
-    - name: lipo
-      run: |
-        ls -R
-        cd artifacts
-        lipo -create -output libopencv_dart.dylib */libopencv_dart.dylib
-        lipo -info libopencv_dart.dylib
-        tar -zcvf libopencv_dart-macos-os64.tar.gz libopencv_dart.dylib
-    - name: create-release
-      uses: softprops/action-gh-release@v2
-      if: startsWith(github.ref, 'refs/tags/')
-      with:
-        draft: true
-        prerelease: false
-        token: ${{ secrets.GITHUB_TOKEN }}
-        files: artifacts/libopencv_dart-macos-os64.tar.gz
-  ios:
-    name: ios
-    runs-on: macos-14
-    env:
-      COMMON_CMAKE_OPTIONS: |
-        -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/profiles/ios.toolchain.cmake \
-        -DDEPLOYMENT_TARGET=$IOS_DEPLOYMENT_TARGET \
-        -DENABLE_BITCODE=$ENABLE_BITCODE \
-        -DENABLE_ARC=$ENABLE_ARC \
-        -DENABLE_VISIBILITY=$ENABLE_VISIBILITY \
-        -DCMAKE_INSTALL_PREFIX=install \
-        -DCMAKE_BUILD_TYPE=Release \
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv.full"
-          tag: "4.10.0+6"
-          fileName: "libopencv-ios-x64.tar.gz"
-          out-file-path: "build/opencv/x64"
-          extract: true
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv.full"
-          tag: "4.10.0+6"
-          fileName: "libopencv-ios-arm64.tar.gz"
-          out-file-path: "build/opencv/arm64"
-          extract: true
-      - name: build_simulator64
-        run: |
-          mkdir -p build/x64 && cd build/x64
-          cmake -S ${{ github.workspace }} \
-          ${{ env.COMMON_CMAKE_OPTIONS }} -DPLATFORM=SIMULATOR64 \
-          -DOpenCV_DIR=${{ github.workspace }}/build/opencv/x64/lib/cmake/opencv4
-
-          cmake --build . --config Release --target install
-      - name: build_os64
-        run: |
-          mkdir -p build/os64 && cd build/os64
-          cmake -S ${{ github.workspace }} \
-          ${{ env.COMMON_CMAKE_OPTIONS }} -DPLATFORM=OS64 \
-          -DOpenCV_DIR=${{ github.workspace }}/build/opencv/arm64/lib/cmake/opencv4
-
-          cmake --build . --config Release --target install
-      - name: package
-        run: |
-          xcodebuild -create-xcframework \
-            -framework build/x64/install/opencv_dart.framework \
-            -framework build/os64/install/opencv_dart.framework \
-            -output opencv_dart.xcframework
-          tar -zcvf libopencv_dart-ios-os64.tar.gz opencv_dart.xcframework
-      - uses: actions/upload-artifact@v4
-        name: upload
-        with:
-          path: libopencv_dart-ios-os64.tar.gz
-          name: libopencv_dart-ios-os64.tar.gz
-      - name: release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          draft: true
-          prerelease: false
-          files: |
-            libopencv_dart-ios-os64.tar.gz
diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
new file mode 100644
index 00000000..9591df0f
--- /dev/null
+++ b/.github/workflows/coverage.yaml
@@ -0,0 +1,45 @@
+name: coverage
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  windows:
+    name: windows
+    runs-on: windows-2019
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+      - uses: robinraju/release-downloader@v1.10
+        with:
+          repository: "rainyl/opencv_dart"
+          tag: "dnn_test_files"
+          fileName: "models.zip"
+          out-file-path: "packages/dartcv/test/"
+          extract: true
+      - uses: robinraju/release-downloader@v1.10
+        with:
+          repository: "rainyl/dartcv"
+          latest: true
+          fileName: "libdartcv-windows-x64-vs2019.tar.gz"
+          out-file-path: "packages/dartcv/libdartcv"
+          extract: true
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+      - name: test coverage
+        run: |
+          cd "${{github.workspace}}\packages\dartcv"
+          $env:PATH="${{github.workspace}}\packages\dartcv\libdartcv\lib;$env:PATH"
+          dart pub global activate coverage
+          dart pub global run coverage:test_with_coverage --package . --package-name opencv_dart
+      - name: Upload to Codecov
+        uses: codecov/codecov-action@v4.0.1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: rainyl/opencv_dart
+          file: ./coverage/lcov.info
diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
deleted file mode 100644
index 1ed45069..00000000
--- a/.github/workflows/linux.yaml
+++ /dev/null
@@ -1,76 +0,0 @@
-name: linux
-
-on:
-  push:
-    tags:
-      - "v*.*.*"
-  pull_request:
-    branches: [ "main" ]
-
-jobs:
-  ubuntu:
-    name: ubuntu
-    runs-on: ubuntu-22.04
-    strategy:
-      matrix:
-        arch: [x64]
-    env:
-      COMMON_CMAKE_OPTIONS: |
-        -DCMAKE_INSTALL_PREFIX=install \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DCVD_PLATFORM_INSTALL_DIR="${{ github.workspace }}/linux" \
-
-    steps:
-      - name: setup
-        run: |
-          sudo apt-get update
-
-          sudo apt-get install -y curl unzip build-essential \
-            libgtk-3-dev ffmpeg libavcodec-dev \
-            cmake ninja-build libavformat-dev libavutil-dev \
-            libswscale-dev libgflags-dev \
-            libjpeg-dev libpng-dev libtiff-dev
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv.full"
-          tag: "4.10.0+6"
-          fileName: "libopencv-linux-${{ matrix.arch }}.tar.gz"
-          out-file-path: "build/opencv"
-          extract: true
-      - name: build
-        run: |
-          cd build
-          cmake -S ${{ github.workspace }} \
-          ${{ env.COMMON_CMAKE_OPTIONS }} \
-          -DOpenCV_DIR=${{ github.workspace }}/build/opencv/lib/cmake/opencv4
-
-          cmake --build . --config Release -j $(nproc)
-          cmake --build . --config Release --target install
-      - name: package
-        run: |
-          tar -C build/install -zcvf libopencv_dart-linux-${{ matrix.arch }}.tar.gz .
-      - uses: actions/upload-artifact@v4
-        name: upload
-        with:
-          path: libopencv_dart-linux-${{ matrix.arch }}.tar.gz
-          name: libopencv_dart-linux-${{ matrix.arch }}.tar.gz
-      - uses: subosito/flutter-action@v2
-        with:
-          flutter-version: '3.19.6'
-          channel: "stable"
-      - name: test
-        run: |
-          export OPENCV_DART_LIB_PATH="${{github.workspace}}/linux/libopencv_dart.so"
-          dart pub get
-          dart test -x skip-workflow,no-local-files
-      - name: release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          draft: true
-          prerelease: false
-          files: |
-            libopencv_dart-linux-${{ matrix.arch }}.tar.gz
diff --git a/.github/workflows/windows.yaml b/.github/workflows/windows.yaml
deleted file mode 100644
index 7c3c68f5..00000000
--- a/.github/workflows/windows.yaml
+++ /dev/null
@@ -1,77 +0,0 @@
-name: windows
-
-on:
-  push:
-    branches: ["main"]
-    tags:
-      - "v*.*.*"
-  pull_request:
-    branches: [ "main" ]
-
-jobs:
-  windows:
-    name: windows
-    runs-on: windows-2019
-    strategy:
-      matrix:
-        arch: [x64]
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv.full"
-          tag: "4.10.0+6"
-          fileName: "libopencv-windows-${{ matrix.arch }}.tar.gz"
-          out-file-path: "build/opencv"
-          extract: true
-      - name: build
-        run: |
-          cd build
-          cmake -DCMAKE_INSTALL_PREFIX=install `
-          -DCMAKE_BUILD_TYPE=Release `
-          -DCVD_PLATFORM_INSTALL_DIR="${{ github.workspace }}/windows" `
-          -DOpenCV_DIR=${{ github.workspace }}/build/opencv ..
-
-          cmake --build . --config Release -j $(nproc)
-          cmake --build . --config Release --target install
-      - name: package
-        run: |
-          tar -C build/install -zcvf libopencv_dart-windows-${{ matrix.arch }}.tar.gz .
-      - uses: actions/upload-artifact@v4
-        name: upload
-        with:
-          path: libopencv_dart-windows-${{ matrix.arch }}.tar.gz
-          name: libopencv_dart-windows-${{ matrix.arch }}.tar.gz
-      - uses: robinraju/release-downloader@v1.10
-        with:
-          repository: "rainyl/opencv_dart"
-          tag: "dnn_test_files"
-          fileName: "models.zip"
-          out-file-path: "test/"
-          extract: true
-      - uses: subosito/flutter-action@v2
-        with:
-          channel: "stable"
-      - name: test coverage
-        run: |
-          cd "${{github.workspace}}"
-          ls windows
-          $env:PATH="${{github.workspace}}\windows;$env:PATH"
-          dart pub global activate coverage
-          dart pub global run coverage:test_with_coverage --package . --package-name opencv_dart
-      - name: Upload to Codecov
-        uses: codecov/codecov-action@v4.0.1
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-          slug: rainyl/opencv_dart
-          file: ./coverage/lcov.info
-      - name: release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        with:
-          draft: true
-          prerelease: false
-          files: |
-            libopencv_dart-windows-${{ matrix.arch }}.tar.gz