Example usage for android.hardware Camera open

Introduction

In this page you can find the example usage for android.hardware Camera open.

Prototype

public static Camera open() 

Source Link

Document

Creates a new Camera object to access the first back-facing camera on the device.

Usage

From source file:com.example.android.camera.CameraActivity.java

@Override
protected void onResume() {
    super.onResume();

    Camera.PreviewCallback previewCallback = new Camera.PreviewCallback() {

        @Override//  w ww  .j a v a 2s  .co m
        public void onPreviewFrame(byte[] data, Camera camera) {

            if (notRequesting && mPreview.faces.size() >= 1 && imageFormat == ImageFormat.NV21) {

                // Block Request.
                notRequesting = false;

                try {
                    Camera.Parameters parameters = camera.getParameters();
                    Size size = parameters.getPreviewSize();

                    textServerView.setText("Preparing Image to send");
                    YuvImage previewImg = new YuvImage(data, parameters.getPreviewFormat(), size.width,
                            size.height, null);
                    pWidth = previewImg.getWidth();
                    pHeight = previewImg.getHeight();

                    Log.d("face View", "Width: " + pWidth + " x Height: " + pHeight);
                    prepareMatrix(matrix, 0, pWidth, pHeight);
                    List<Rect> foundFaces = getFaces();

                    for (Rect cRect : foundFaces) {
                        // Cropping
                        ByteArrayOutputStream bao = new ByteArrayOutputStream();
                        previewImg.compressToJpeg(cRect, 100, bao);
                        byte[] mydata = bao.toByteArray();

                        // Resizing
                        ByteArrayOutputStream sbao = new ByteArrayOutputStream();
                        Bitmap bm = BitmapFactory.decodeByteArray(mydata, 0, mydata.length);
                        Bitmap sbm = Bitmap.createScaledBitmap(bm, 100, 100, true);
                        bm.recycle();
                        sbm.compress(Bitmap.CompressFormat.JPEG, 100, sbao);
                        byte[] mysdata = sbao.toByteArray();

                        RequestParams params = new RequestParams();
                        params.put("upload", new ByteArrayInputStream(mysdata), "tmp.jpg");

                        textServerView.setText("Sending Image to the Server");

                        FaceMatchClient.post(":8080/match", params, new JsonHttpResponseHandler() {
                            @Override
                            public void onSuccess(JSONArray result) {
                                Log.d("face onSuccess", result.toString());

                                try {
                                    JSONObject myJson = (JSONObject) result.get(0);
                                    float dist = (float) Double.parseDouble(myJson.getString("dist"));
                                    Log.d("distance", "" + dist);
                                    int level = (int) ((1 - dist) * 100);
                                    if (level > previousMatchLevel) {
                                        textView.setText("Match " + level + "% with " + myJson.getString("name")
                                                + " <" + myJson.getString("email") + "> ");

                                        loadImage(myJson.getString("classes"), myJson.getString("username"));
                                    }

                                    previousMatchLevel = level;
                                    trialCounter++;

                                    if (trialCounter < 100 && level < 74) {
                                        textServerView.setText("Retrying...");
                                        notRequesting = true;
                                    } else if (trialCounter == 100) {
                                        textServerView.setText("Fail...");
                                    } else {
                                        textServerView.setText("Found Good Match? If not try again!");
                                        fdButtonClicked = false;
                                        trialCounter = 0;
                                        previousMatchLevel = 0;
                                        mCamera.stopFaceDetection();
                                        button.setText("StartFaceDetection");
                                    }

                                } catch (JSONException e) {
                                    // TODO Auto-generated catch block
                                    e.printStackTrace();
                                }

                                //                                        informationView.showInfo(myJson);
                            }

                        });
                    }

                    textServerView.setText("POST Sent");
                    textServerView.setText("Awaiting for response");

                } catch (Exception e) {
                    e.printStackTrace();
                    textServerView.setText("Error AsyncPOST");
                }
            }
        }
    };

    // Open the default i.e. the first rear facing camera.
    mCamera = Camera.open();
    mCamera.setPreviewCallback(previewCallback);

    // To use front camera
    //        mCamera = Camera.open(CameraActivity.getFrontCameraId());
    mPreview.setCamera(mCamera);
    parameters = mCamera.getParameters();
    imageFormat = parameters.getPreviewFormat();
    PreviewSize = parameters.getPreviewSize();
}

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From source file:com.example.user.lstapp.CreatePlaceFragment.java

public static Camera getCameraInstance() {
    Camera camera = null;/*ww  w.j  a v a2  s  . c om*/
    try {
        camera = Camera.open();
    } catch (RuntimeException re) {
        Log.e(TAG, "Camera is null.", re);
    }
    return camera;
}

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From source file:ca.nehil.rter.streamingapp2.StreamingActivity.java

private Camera openCamera() {
    Camera cameraDevice = Camera.open();
    for (int i = 0; i < numberOfCameras && cameraDevice == null; i++) {
        Log.d(LOG_TAG, "opening camera #" + String.valueOf(i));
        cameraDevice = Camera.open(i);//  w  w  w.j  a  va  2 s .c  o  m
    }
    try {
        if (cameraDevice == null) {
            throw new Exception("No camera device found");
        }
    } catch (Exception e) {
        cameraDevice.release();
        Log.e(LOG_TAG, e.getMessage());
        e.printStackTrace();
    }
    return cameraDevice;
}

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From source file:gov.nasa.arc.geocam.geocam.CameraActivity.java

public void surfaceCreated(SurfaceHolder holder) {
    mCamera = Camera.open();
    try {/*from ww  w.  j  av a2s .  co  m*/
        mCamera.setPreviewDisplay(holder);
    } catch (IOException e) {
        Log.e(GeoCamMobile.DEBUG_ID, "mCamera.setPreviewDisplay threw an IOException: " + e);
    }
}

---

From source file:com.longle1.facedetection.MainActivity.java

@Override
public void surfaceCreated(SurfaceHolder holder) {
    // The Surface has been created, acquire the camera and tell it where
    // to draw./*from  w  w w .  ja v a 2s .  c o  m*/
    mCamera = Camera.open();
    try {
        mCamera.setPreviewDisplay(holder);
    } catch (IOException exception) {
        mCamera.release();
        mCamera = null;
    }
}

---

From source file:ca.nehil.rter.streamingapp.StreamingActivity.java

private Camera openCamera() {
    Log.d("CameraDebug", "openCamera");
    Camera cameraDevice = Camera.open();
    numberOfCameras = Camera.getNumberOfCameras();
    for (int i = 0; i < numberOfCameras && cameraDevice == null; i++) {
        Log.d("CameraDebug", "opening camera #" + String.valueOf(i));
        cameraDevice = Camera.open(i);/*w w  w.jav a2 s.co  m*/
    }
    try {
        if (cameraDevice == null) {
            throw new Exception("No camera device found");
        }
    } catch (Exception e) {
        Log.d("CameraDebug", "Released cam in openCamera, exception occured");
        cameraDevice.release();
        cameraDevice = null;
        Log.e("CameraDebug", e.getMessage());
        e.printStackTrace();
    }
    return cameraDevice;
}

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From source file:com.gsma.rcs.ri.sharing.video.OutgoingVideoSharing.java

/**
 * Check if good camera sizes are available for encoder. Must be used only before open camera.
 *
 * @param cameraId the camera ID//from  w  w w .j  av a 2s  . c  o  m
 * @return false if the camera don't have the good preview size for the encoder
 */
boolean checkCameraSize(CameraOptions cameraId) {
    boolean sizeAvailable = false;
    Camera camera = null;
    Method method = getCameraOpenMethod();
    if (method != null) {
        try {
            camera = (Camera) method.invoke(camera, new Object[] { cameraId.getValue() });
        } catch (Exception e) {
            camera = Camera.open();
        }
    } else {
        camera = Camera.open();
    }
    if (camera == null) {
        return false;

    }
    // Check common sizes
    Parameters param = camera.getParameters();
    List<Camera.Size> sizes = param.getSupportedPreviewSizes();
    for (Camera.Size size : sizes) {
        if ((size.width == H264Config.QVGA_WIDTH && size.height == H264Config.QVGA_HEIGHT)
                || (size.width == H264Config.CIF_WIDTH && size.height == H264Config.CIF_HEIGHT)
                || (size.width == H264Config.VGA_WIDTH && size.height == H264Config.VGA_HEIGHT)) {
            sizeAvailable = true;
            break;
        }
    }

    // Release camera
    camera.release();

    return sizeAvailable;
}

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From source file:org.durka.hallmonitor.CoreStateManager.java

/**
 * With this non-CM users can use torch button in HallMonitor. Should
 * (Hopefully) work on every device with SystemFeature FEATURE_CAMERA_FLASH
 * This code has been tested on I9505 jflte with ParanoidAndroid 4.4 rc2
 *//*from w w  w.j a  v a2s  .c  o  m*/

// Turn On Flash
public void turnOnFlash() {
    setTorchOn(true);
    camera = Camera.open();
    Parameters p = camera.getParameters();
    p.setFlashMode(Parameters.FLASH_MODE_TORCH);
    camera.setParameters(p);
    camera.startPreview();
    Log.d(LOG_TAG, "Flash turned on!");
}

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From source file:hr.abunicic.angular.CameraActivity.java

/**
 * Method that initializes the camera./*w  w  w.  ja  va 2 s.  c o m*/
 */
void initCamera() {
    try {
        mCamera = Camera.open();
    } catch (Exception e) {
        Log.d("ERROR", "Failed to get camera: " + e.getMessage());
    }

    if (mCamera != null) {
        //Creating a CameraView instance to show camera data
        mCameraView = new CameraView(this, mCamera);
        preview = (FrameLayout) findViewById(R.id.camera_view);
        //Adding the CameraView to the layout
        preview.addView(mCameraView);
        params = mCamera.getParameters();

        List<Camera.Size> ls = params.getSupportedPreviewSizes();
        Camera.Size size = ls.get(1);
        params.setPreviewSize(size.width, size.height);

        //Setting focus mode
        params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
        mCamera.setParameters(params);
        mCamera.setDisplayOrientation(90);
    }

    mCameraView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            Vibrator vib = (Vibrator) getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
            vib.vibrate(60);

            //Determining which line is selected
            if (rp != null) {
                try {
                    selectedLine = getTouchedLine(touchX, touchY);
                    selectedLine.color = Color.BLUE;
                } catch (Exception e) {
                }
            } else {
            }

            //AlertDialog for changing the length of the line
            AlertDialog.Builder alert = new AlertDialog.Builder(CameraActivity.this);
            final EditText edittext = new EditText(CameraActivity.this);

            alert.setMessage("Duljina stranice: ");
            alert.setView(edittext);

            alert.setPositiveButton("U redu", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {
                    lineLength = edittext.getText().toString();
                    selectedLine.color = Color.CYAN;
                    Log.d("ocr", "Nova duljina linije: " + lineLength + " ");
                    selectedLine = getTouchedLine(numberX, numberY);
                    RecognitionMethods.refreshLines(rp.getLineSegments(), selectedLine, lineLength);
                    updateDescription();
                }
            });

            alert.show();

            return true;
        }
    });

    mCameraView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            Camera camera = mCamera;
            camera.cancelAutoFocus();

            touchX = event.getX();
            touchY = event.getY();

            return false;
        }

    });

}

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From source file:com.gsma.rcs.ri.sharing.video.OutgoingVideoSharing.java

/**
 * Open the camera/*from   www. j  a v a  2s  .  c om*/
 *
 * @param cameraId Camera ID
 */
private void openCamera(CameraOptions cameraId) {
    Method method = getCameraOpenMethod();
    if (mNbfCameras > 1 && method != null) {
        try {
            int hCamId = 0;
            if (cameraId == CameraOptions.FRONT) {
                Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
                for (int id = 0; id < mNbfCameras; id++) {
                    Camera.getCameraInfo(id, cameraInfo);
                    if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                        hCamId = id;
                        break;
                    }
                }
            }
            mCamera = (Camera) method.invoke(mCamera, new Object[] { hCamId });
            mOpenedCameraId = cameraId;
        } catch (Exception e) {
            mCamera = Camera.open();
            mOpenedCameraId = CameraOptions.BACK;
        }
    } else {
        mCamera = Camera.open();
        mOpenedCameraId = CameraOptions.BACK;
    }
    if (mVideoPlayer != null) {
        mVideoPlayer.setCameraId(mOpenedCameraId.getValue());
    }
    if (LogUtils.isActive) {
        Log.d(LOGTAG, "Open camera ".concat(mOpenedCameraId.toString()));
    }
}

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