How to show reign of area using SurfaceView and SurfaceHolder? - android-camera

Question

I would like to know if there is a way to show only a reign of area of the camera that shown on a SurfaceView.
I've got an image like that (microscopic image)
and I want to show image like that(Cropped and Stretched):
This is a part of my code(it is a basic code that show the camera on SurfaceView using SurfaceHolder):
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.activity_sample_testing);
overridePendingTransition(0, 0);
cameraView = (SurfaceView)findViewById(R.id.CameraView);
holder = cameraView.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
try {
camera = Camera.open();
parameters = camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
parameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
//parameters.setZoom(10);
camera.setParameters(parameters);
camera.setPreviewDisplay(holder);
camera.setDisplayOrientation(90);
camera.startPreview();
camera.autoFocus(autoFocusCallback);
recorder = new MediaRecorder();
final Timer myTimer = new Timer();
myTimer.schedule(new TimerTask() {
#Override
public void run() {
StartTest(0);
myTimer.cancel();
myTimer.purge();
}
},10000, 10);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void initRecorder() {
camera.unlock();
recorder.setCamera(camera);
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
CamcorderProfile cpHigh = CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);
recorder.setMaxDuration(50000); // 50 seconds
recorder.setMaxFileSize(300000000); // Approximately 5 megabytes
recorder.setOutputFile(VIDEO_PATH);
}
private void prepareRecorder() {
recorder.setPreviewDisplay(holder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
Thanks for any help!