Android Open Source - opencv-android-starter-project Camera View Fragment

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License

The source code is released under:

MIT License

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Java Source Code

package com.computervision;
//from  w w w  .j  a  v a  2 s  .  c  o m
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Mat;

import android.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;

public class CameraViewFragment extends Fragment implements CvCameraViewListener2
{
  private static final String TAG = "CameraViewFragment";
  private CameraBridgeViewBase mOpenCvCameraView;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState)
  {
    View rootView = inflater.inflate(R.layout.fragment_computer_vision,
        container, false);
    
    Log.i(TAG, "called onCreate");
    super.onCreate(savedInstanceState);
    getActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_FULLSCREEN);
    
    getActivity().setContentView(R.layout.fragment_computer_vision);

    mOpenCvCameraView = (CameraBridgeViewBase) getActivity().findViewById(R.id.camera_view);
    mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
    mOpenCvCameraView.setCvCameraViewListener(this);
    return rootView;
  }

  public CameraViewFragment()
  {
    // TODO Auto-generated constructor stub
  }

  @Override
  public void onDestroy()
  {
    super.onDestroy();
    if (mOpenCvCameraView != null)
      mOpenCvCameraView.disableView();
  }

  @Override
  public void onPause()
  {
    super.onPause();
    if (mOpenCvCameraView != null)
      mOpenCvCameraView.disableView();
  }

  @Override
  public void onResume()
  {
    super.onResume();
    OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_8, this.getActivity(),
        mLoaderCallback);
  }

  @Override
  public void onCameraViewStarted(int width, int height)
  {
    // TODO Auto-generated method stub
    
  }

  @Override
  public void onCameraViewStopped()
  {
    // TODO Auto-generated method stub
    
  }

  @Override
  public Mat onCameraFrame(CvCameraViewFrame inputFrame)
  {
    // TODO Auto-generated method stub
    return inputFrame.rgba();
  }
  
  private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this.getActivity())
  {
    @Override
    public void onManagerConnected(int status)
    {
      switch (status)
      {
      case LoaderCallbackInterface.SUCCESS:
      {
        Log.i(TAG, "OpenCV loaded Successfully");
        mOpenCvCameraView.enableView();
      }
        break;
      default:
      {
        super.onManagerConnected(status);
      }
        break;
      }
    }
  };

}

Java Source Code List

com.computervision.CameraViewFragment.java
com.computervision.CameraView.java
com.computervision.ComputerVision.java
com.computervision.ProcessImageFragment.java