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flutter_camera_windows's Introduction

Camera Windows Plugin

The Flutter Camera Windows Plugin project is ported from camera_windows. It provides a temporary solution for solving the known issue #97542: Support for image streaming is not yet implemented. With the plugin, you can get the camera frames for image processing.

Usage

  1. In pubspec.yaml of your flutter project, add the following dependency:

    camera_windows: 
        git:
        url: https://github.com/yushulx/flutter_camera_windows.git
  2. Create a StreamSubscription<FrameAvailabledEvent> to receive the camera frames for image processing:

    void _onFrameAvailable(FrameAvailabledEvent event) {
        if (mounted) {
            Map<String, dynamic> map = event.toJson();
            final Uint8List? data = map['bytes'] as Uint8List?;
            // image processing
        }
    }
    
    StreamSubscription<FrameAvailabledEvent>? _frameAvailableStreamSubscription;
    _frameAvailableStreamSubscription?.cancel();
      _frameAvailableStreamSubscription =
          (CameraPlatform.instance as CameraWindows)
              .onFrameAvailable(cameraId)
              .listen(_onFrameAvailable);

    Note: To avoid blocking the main thread, you need to move heavy computation to a worker thread: Dart isolate or native thread implemented in platform-specific code. The example demonstrates how to use Dynamsoft Barcode Reader to scan barcode and QR codes. The barcode decoding method is implemented using C++ thread and task queue.

flutter_camera_windows's People

Contributors

yushulx avatar

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