Initial commit

src/ve/ucv/ciens/ccg/nxtcam/CamActivity.java

@@ -0,0 +1,129 @@
+package ve.ucv.ciens.ccg.nxtcam;
+
+import ve.ucv.ciens.ccg.nxtcam.camera.CameraPreview;
+import ve.ucv.ciens.ccg.nxtcam.network.ImageTransferThread;
+import ve.ucv.ciens.ccg.nxtcam.utils.Logger;
+import ve.ucv.ciens.ccg.nxtcam.utils.ProjectConstants;
+import android.app.Activity;
+import android.hardware.Camera;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v4.app.NavUtils;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.WindowManager;
+import android.widget.Toast;
+
+public class CamActivity extends Activity{
+	private final String TAG = "NXTCAM_CAM";
+	private final String CLASS_NAME = MainActivity.class.getSimpleName();
+	
+	private Camera hwCamera;
+	private CameraPreview cPreview;
+	private CameraSetupTask camSetupTask;
+	private ImageTransferThread imThread;
+
+	/*******************
+	 * Android methods *
+	 *******************/
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+		
+		cPreview = new CameraPreview(this, hwCamera);
+		setContentView(cPreview);
+		
+		imThread = new ImageTransferThread();
+	}
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		// Inflate the menu; this adds items to the action bar if it is present.
+		getMenuInflater().inflate(R.menu.cam, menu);
+		return true;
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(MenuItem item) {
+		switch (item.getItemId()) {
+		case android.R.id.home:
+			// This ID represents the Home or Up button. In the case of this
+			// activity, the Up button is shown. Use NavUtils to allow users
+			// to navigate up one level in the application structure. For
+			// more details, see the Navigation pattern on Android Design:
+			//
+			// http://developer.android.com/design/patterns/navigation.html#up-vs-back
+			//
+			NavUtils.navigateUpFromSameTask(this);
+			return true;
+		}
+		return super.onOptionsItemSelected(item);
+	}
+
+	@Override
+	public void onResume(){
+		super.onResume();
+
+		camSetupTask = new CameraSetupTask();
+		camSetupTask.execute();
+	}
+
+	@Override
+	public void onPause(){
+		super.onPause();
+
+		cPreview.removePreviewCallback();
+		cPreview.setCamera(null);
+		releaseCamera();
+	}
+
+	/******************
+	 * My own methods *
+	 ******************/	
+	public void startCameraPreview(){
+		if(hwCamera != null){
+			cPreview.setCamera(hwCamera);
+		}else{
+			Log.wtf(TAG, CLASS_NAME + ".startCameraPreview() :: CAMERA IS NULL!");
+			System.exit(1);
+		}
+	}
+
+	private void releaseCamera(){
+		if(hwCamera != null){
+			hwCamera.release();
+			hwCamera = null;
+		}
+	}
+
+	private class CameraSetupTask extends AsyncTask<Void, Void, Camera>{
+		private final String CLASS_NAME = CameraSetupTask.class.getSimpleName();
+
+		@Override
+		protected Camera doInBackground(Void... params) {
+			Camera cam = null;
+			try{
+				cam = Camera.open(0);
+			}catch(Exception e){
+				if(ProjectConstants.DEBUG) Log.e(TAG, CLASS_NAME + ".doInBackground() :: Failed to open the camera.");
+			}
+			return cam;
+		}
+
+		@Override
+		protected void onPostExecute(Camera result) {
+			hwCamera = result;
+			if(result != null){
+				Logger.log(Logger.LOG_TYPES.DEBUG, TAG, CLASS_NAME + ".onPostExecute() :: Camera successfully opened");
+			}else{
+				Logger.log(Logger.LOG_TYPES.DEBUG, TAG, CLASS_NAME + ".onPostExecute() :: Camera open failed on background task.");
+				Toast.makeText(getApplicationContext(), R.string.camera_failure, Toast.LENGTH_LONG).show();
+			}
+			startCameraPreview();
+
+			super.onPostExecute(result);
+		}
+	};
+}