Android Open Source - cameraspy Main Activity

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From Project

Back to project page cameraspy.

License

The source code is released under:

MIT License

Java Source Code

package com.fuzzLabs.cameraspy;
//  w w w.ja  v  a  2  s .  co  m
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;

import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.PreviewCallback;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends Activity implements SurfaceHolder.Callback,
    Camera.PictureCallback {

  // Variabile
  Button seeCaptures;
  Button btnStart;
  Button btnSettings;
  TextView txtView_Results;
  SurfaceView cameraView;
  ImageView imageView;
  Camera camera;
  Camera.PictureCallback picCallBack = this;

  boolean isWorking = false;
  byte[] oldData = null;
  long counter = 0;
  int regionDifference;
  int imageCount = 1;

  String imagePath;
  File imageFile;
  Uri imageFileUri;
  
  String videoPath;
  File videoFile;
  Uri VideoFileUri;
  
  
  final static int REQUEST_VIDEO_CAPTURED = 1;

  // Intentul de pornire a aplicatiei implicite de captura
  Intent cameraIntent;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.new_layout);

    // Ascunde status-bar-ul pentru API > Android 4.1
    /*
     * View decorView = getWindow().getDecorView(); // Hide the status bar.
     * int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
     * decorView.setSystemUiVisibility(uiOptions); // Remember that you
     * should never show the action bar if the // status bar is hidden, so
     * hide that too if necessary. ActionBar actionBar = getActionBar();
     * actionBar.hide();
     */

    // camera feed
    cameraView = (SurfaceView) findViewById(R.id.CameraView);
    SurfaceHolder surfaceHolder = cameraView.getHolder();
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    surfaceHolder.addCallback(this);

    // output
    txtView_Results = (TextView) findViewById(R.id.textView_results);

    // seeCaptures button
    seeCaptures = (Button) findViewById(R.id.button_seeImages);

    // settings button
    btnSettings = (Button) findViewById(R.id.button_settings);
    btnSettings.setOnClickListener(settingsDefaultListener);

    // start button
    btnStart = (Button) findViewById(R.id.button_startus);
    btnStart.setOnClickListener(startDefaultListener);

    seeCaptures = (Button) findViewById(R.id.button_seeImages);
    seeCaptures.setOnClickListener(seeCapturesDefaultListener);

    // last captured image preview
    imageView = (ImageView) findViewById(R.id.ImageView);
    
    counter = 0;
    regionDifference = 0;
    isWorking = false;
  }

  View.OnClickListener seeCapturesDefaultListener = new View.OnClickListener() {

    // deschide Galeria pentru a putea accesa pozele facute
    @Override
    public void onClick(View v) {
      Intent viewImage = new Intent(Intent.ACTION_VIEW,
          Uri.parse("content://media/internal/images/media"));

      /*
       * Intent viewImage = new Intent();
       * viewImage.setAction(Intent.ACTION_VIEW);
       * viewImage.setDataAndType(Uri.fromFile(new
       * File(Environment.getExternalStorageDirectory().getPath())),
       * "image/*");
       */

      startActivity(viewImage);
    }
  };

  View.OnClickListener settingsDefaultListener = new View.OnClickListener() {

    // deschide un view nou unde putem sa selectam cateva optiuni
    @Override
    public void onClick(View v) {
      // call the Settings View and tweak stuff
      Intent settingsIntent = new Intent();
      settingsIntent.setClass(getApplicationContext(),
          SettingsActivity.class);
      startActivity(settingsIntent);
    }
  };

  View.OnClickListener startDefaultListener = new View.OnClickListener() {

    // porneste the whole thing setand daca variabila "isWorking"
    // este adevarata sau falsa.
    @Override
    public void onClick(View v) {
      // TODO Auto-generated method stub
      isWorking = !isWorking;
      if (isWorking) {
        btnStart.setText("Stop");
      } else {
        btnStart.setText("Start");
        txtView_Results.setText("Not running ..");
        counter = 0;
        imageView.setImageResource(android.R.color.transparent);
      }
    }
  };

  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    // locul unde se intampla toata magia prelucrarii
    camera.setPreviewCallback(new PreviewCallback() {

      @Override
      public void onPreviewFrame(byte[] data, Camera camera) {
        /*
         * Log.d("onPreviewFrame-surfaceChanged", String.format(
         * "Got %d bytes of camera data", data.length));
         */

        // oldData este o variabila menita sa retina frame-ul trecut
        // pentru a putea face o comparatie intre frame-ul curent si
        // acesta
        if (isWorking) {
          if (oldData == null) {
            oldData = data;
          } else {
            regionDifference = 0;
            for (int i = 0; i < data.length; i++)
              if (oldData[i] != data[i])
                regionDifference++;

            // regionalDifference este variabila care numara cati
            // biti difera
            // implicit este setata sa recunoasca miscare daca 1/2
            // din bitii frame-ului curent difera in raport cu
            // frame-ul precedent.
            if (regionDifference > (int) data.length / 2) {
              Log.d("onPreviewFrame-surfaceChanged",
                  "motion detected");
              // updateaza status-ul
              txtView_Results
                  .setText("Oh wait .. MOTION DETECTED !!");
              counter++;

              // daca miscarea se intampla pe durata unui timp >
              // counter
              // alertam user-ul.
              if (counter > 10) {
                String number = "+40725453248";
                String message = "!!! Motion detected!!!";

                txtView_Results
                    .setText("Go get the shotGun !!");

                // trimitem mesaj
                android.telephony.SmsManager.getDefault()
                    .sendTextMessage(number, null, message,
                        null, null);

                // facem si o poza, sa avem amintire
                camera.takePicture(null, null, picCallBack);
                counter = 0;
              }

            } else {
              counter = 0;
              Log.d("onPreviewFrame-surfaceChanged",
                  "everything is fine");

              txtView_Results.setText("Everything seems fine ..");
            }

            // variabila oldData primeste mereu valoare frame-ului
            // curent,
            // inainte de schimbarea acestuia
            oldData = data;
            Log.d("counter", String.valueOf(counter));
          }
        }
      }
    });
  }

  public static final int LARGEST_WIDTH = 700;
  public static final int LARGEST_HEIGHT = 400;

  int bestWidth = 0;
  int bestHeight = 0;

  @Override
  public void surfaceCreated(SurfaceHolder holder) {
    // detectam cea mai mare rezolutie posibila a camerei
    // pe care o putem afisa in view-ul nostru
    camera = Camera.open(CameraInfo.CAMERA_FACING_BACK);

    try {
      camera.setPreviewDisplay(holder);
      Camera.Parameters parameters = camera.getParameters();
      List<Camera.Size> previewSizes = parameters
          .getSupportedPreviewSizes();

      if (previewSizes.size() > 0) {
        Iterator<Camera.Size> cei = previewSizes.iterator();
        while (cei.hasNext()) {
          Camera.Size aSize = cei.next();
          if (aSize.width > bestWidth && aSize.width <= LARGEST_WIDTH
              && aSize.height > bestHeight
              && aSize.height <= LARGEST_HEIGHT) {
            bestWidth = aSize.width;
            bestHeight = aSize.height;
          }
        }
        if (bestHeight != 0 && bestWidth != 0) {
          parameters.setPreviewSize(bestWidth, bestHeight);
          cameraView.setLayoutParams(new LinearLayout.LayoutParams(
              bestWidth, bestHeight));
        }
      }
      camera.setParameters(parameters);
    } catch (IOException e) {
      camera.release();
    }

    camera.startPreview();
  }

  @Override
  public void surfaceDestroyed(SurfaceHolder holder) {
    // TODO Auto-generated method stub
    camera.stopPreview();
    camera.release();
  }

  @Override
  public void onPictureTaken(byte[] data, Camera camera) {

    // setam directorul unde salvam snapshot-urile
    imagePath = Environment.getExternalStorageDirectory().getPath()
        + "/CameraSPY/temp" + String.valueOf(imageCount) + ".jpg";
    imageFile = new File(imagePath);
    imageFileUri = Uri.fromFile(imageFile);

    // Uri imageFileUri;
    // Bundle extras = callingIntent.getExtras();
    // imageFileUri = (Uri) extras.get("imageFileUri");

    try {
      OutputStream imageFileOS = getContentResolver().openOutputStream(
          imageFileUri);
      imageFileOS.write(data);
      imageFileOS.flush();
      imageFileOS.close();

      Log.d("onPictureTaken", "Go get the shotgun!");
    } catch (FileNotFoundException e) {
    } catch (IOException e) {
    }

    imageCount++;
    camera.startPreview();

    Bitmap displayedImage = BitmapFactory
        .decodeFile(imageFileUri.getPath());

    // afisam pe ecran ultima poza facuta
    imageView.setImageBitmap(Bitmap.createScaledBitmap(displayedImage,
        bestWidth, bestHeight, false));
  }
}

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