Example usage for android.hardware Camera getParameters

Introduction

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

Prototype

public Parameters getParameters() 

Source Link

Document

Returns the current settings for this Camera service.

Usage

From source file:com.fallahpoor.infocenter.fragments.CameraFragment.java

private ArrayList<ListItem> getCameraParams(int cameraFacing) {

    ArrayList<ListItem> camParams = new ArrayList<>();
    Camera.Parameters cameraParams;//from  w ww .  j  ava2  s . c  om
    Camera camera;
    String[] items;
    ArrayList<String> subItems;

    camera = getCameraInstance(cameraFacing);

    if (camera != null) {
        cameraParams = camera.getParameters();
        releaseCamera(camera);

        items = getItemsArray();
        subItems = getParameters(cameraParams);

        for (int i = 0; i < items.length; i++) {
            camParams.add(new OrdinaryListItem(items[i], subItems.get(i)));
        }

    } else { // camera is busy or for some other reason camera isn't available
        if (cameraFacing == CameraInfo.CAMERA_FACING_BACK) {
            camParams.add(new OrdinaryListItem(getString(R.string.cam_sub_item_back_camera_busy), ""));
        } else {
            camParams.add(new OrdinaryListItem(getString(R.string.cam_sub_item_front_camera_busy), ""));
        }

    }

    return camParams;

}

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

@Override
public void onPreviewFrame(final byte[] data, final Camera camera) {
    try {// w  w w  .  ja  v  a 2 s .co m
        Size size = camera.getParameters().getPreviewSize();
        processImage(data, size.width, size.height);
        camera.addCallbackBuffer(data);
    } catch (RuntimeException e) {
        // The camera has probably just been released, ignore.
    }
}

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From source file:com.csusm.twinder.Fragment.QRScanFragment.java

@Nullable
@Override//from   www.ja  v a 2s  .  com
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_scan, container, false);

    view.setOnTouchListener(new View.OnTouchListener() {
        public boolean onTouch(View v, MotionEvent event) {

            Camera camera = mCameraSource.getCamera();

            if (camera != null) {
                camera.cancelAutoFocus();
                Rect focusRect = calculateTapArea((int) event.getX(), (int) event.getY(), 1f);

                Camera.Parameters parameters = camera.getParameters();
                parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
                if (parameters.getMaxNumFocusAreas() > 0) {
                    List<Camera.Area> mylist = new ArrayList<Camera.Area>();
                    mylist.add(new Camera.Area(focusRect, 1000));
                    parameters.setFocusAreas(mylist);
                }

                //camera.setParameters(parameters);
                camera.autoFocus(new Camera.AutoFocusCallback() {
                    @Override
                    public void onAutoFocus(boolean success, Camera camera) {
                        camera.cancelAutoFocus();
                        Camera.Parameters params = camera.getParameters();
                        if (params.getFocusMode() != Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE) {
                            params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                            camera.setParameters(params);
                        }
                    }
                });
            }

            return true;
        }
    });

    return view;
}

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

private void startFocus(int x, int y) {
    if (mCamera != null) {
        mCamera.cancelAutoFocus();/*from w  w  w. j  a va 2s  .c om*/
        Rect focusRect = calculateTapArea(x, y);

        Camera.Parameters parameters = mCamera.getParameters();
        if (parameters.getFocusMode() != Camera.Parameters.FOCUS_MODE_AUTO) {
            parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
        }
        if (parameters.getMaxNumFocusAreas() > 0) {
            List<Camera.Area> mylist = new ArrayList<Camera.Area>();
            mylist.add(new Camera.Area(focusRect, 1000));
            parameters.setFocusAreas(mylist);
        }

        try {
            mCamera.cancelAutoFocus();
            mCamera.setParameters(parameters);
            mCamera.startPreview();
            mCamera.autoFocus(new Camera.AutoFocusCallback() {
                @Override
                public void onAutoFocus(boolean success, Camera camera) {
                    if (camera.getParameters()
                            .getFocusMode() != Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE) {
                        Camera.Parameters parameters = camera.getParameters();
                        parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                        if (parameters.getMaxNumFocusAreas() > 0) {
                            parameters.setFocusAreas(null);
                        }
                        camera.setParameters(parameters);
                        camera.startPreview();
                    }
                }
            });
        } catch (Exception e) {
            DKLog.e(TAG, Trace.getCurrentMethod() + e.toString());
        }
    }
}

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From source file:me.hammarstrom.imagerecognition.activities.MainActivity.java

/**
 * Helper method to get {@link Camera} instance
 *
 * @return camera//  w  w  w . j a  v a 2  s  .co m
 */
private Camera getCameraInstance() {
    Camera camera = null;
    try {
        camera = Camera.open();

        // Set auto focus mode
        Camera.Parameters parameters = camera.getParameters();
        parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
        camera.setParameters(parameters);

    } catch (Exception e) {
        // cannot get camera or does not exist
    }
    return camera;
}

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From source file:com.jasompeter.openalpr.CameraActivity.java

public void setCorrectSize(Camera camera, int width, int height) {
    Camera.Parameters parameters = camera.getParameters();
    Camera.Size size = getBestPreviewSize(width, height, parameters);

    if (size != null) {
        parameters.setPreviewSize(size.width, size.height);
        mCamera.setParameters(parameters);
    }// www. j  a  v a  2s  . co m
}

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From source file:com.gelakinetic.selfr.CameraActivity.java

/**
 * A safe way to get an instance of the Camera object. Also sets up picture size & focus type
 *
 * @param cameraType Camera.CameraInfo.CAMERA_FACING_FRONT or
 *                   Camera.CameraInfo.CAMERA_FACING_BACK
 * @return A Camera object if it was created, or null
 *//*from   www .  j av a 2s. co  m*/
@Nullable
private static Camera getCameraInstance(int cameraType) {
    Camera camera = null;
    try {
        Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
        /* Scan through all the cameras for one of the specified type */
        for (int camIdx = 0; camIdx < Camera.getNumberOfCameras(); camIdx++) {
            Camera.getCameraInfo(camIdx, cameraInfo);
            if (cameraInfo.facing == cameraType) {
                try {
                    /* Open the camera, get default parameters */
                    camera = Camera.open(camIdx);
                    Camera.Parameters parameters = camera.getParameters();

                    /* Set the image to native resolution */
                    List<Camera.Size> sizes = parameters.getSupportedPictureSizes();
                    Camera.Size nativeSize = null;
                    int maxHeight = Integer.MIN_VALUE;
                    for (Camera.Size size : sizes) {
                        if (size.height > maxHeight) {
                            maxHeight = size.height;
                            nativeSize = size;
                        }
                    }
                    if (nativeSize != null) {
                        parameters.setPictureSize(nativeSize.width, nativeSize.height);
                    }

                    /* Set auto-focus, if we can */
                    List<String> focusModes = parameters.getSupportedFocusModes();
                    if (focusModes != null && focusModes.contains(Camera.Parameters.FOCUS_MODE_AUTO)) {
                        parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
                    }

                    /* Set the parameters */
                    camera.setParameters(parameters);

                } catch (RuntimeException e) {
                    /* Eat it */
                }
            }
        }
    } catch (Exception e) {
        /* Camera is not available (in use or does not exist) */
    }
    return camera; /* returns null if camera is unavailable */
}

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From source file:com.jasompeter.openalpr.CameraActivity.java

public void startPreview() {
    try {/*  w w w. j a v a  2 s  . c  o  m*/
        mCamera.setPreviewDisplay(mSurfaceHolder);
    } catch (IOException e) {
        e.printStackTrace();
        Log.d(TAG, "Cannot set preview display.");
    }

    setCorrectOrientation(mCamera);
    setCorrectSize(mCamera, mSurfaceHolder.getSurfaceFrame().width(),
            mSurfaceHolder.getSurfaceFrame().height());

    mCamera.startPreview();

    mCamera.setPreviewCallback(new Camera.PreviewCallback() {
        @Override
        public void onPreviewFrame(byte[] data, Camera camera) {

            if (!mEnableRecognition) {
                return;
            }

            if (camera.getParameters().getPreviewFormat() == ImageFormat.NV21) {
                Camera.Size previewSize = camera.getParameters().getPreviewSize();
                YuvImage yuvimage = new YuvImage(data, ImageFormat.NV21, previewSize.width, previewSize.height,
                        null);
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                yuvimage.compressToJpeg(new Rect(0, 0, previewSize.width, previewSize.height), 50, baos);
                recognize(baos.toByteArray());
            }

        }
    });
}

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From source file:com.TaxiDriver.jy.CameraPreview.java

public void switchCamera(Camera camera) {
    setCamera(camera);/* w  ww.j  av  a2s .c om*/
    try {
        camera.setPreviewDisplay(mHolder);
    } catch (IOException exception) {
        Log.e(TAG, "IOException caused by setPreviewDisplay()", exception);
    }
    Camera.Parameters parameters = camera.getParameters();
    parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
    requestLayout();

    camera.setParameters(parameters);
}

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From source file:info.guardianproject.iocipher.camera.VideoCameraActivity.java

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

    //even when not recording, we'll compress frames in order to estimate our FPS

    Camera.Parameters parameters = camera.getParameters();
    mLastWidth = parameters.getPreviewSize().width;
    mLastHeight = parameters.getPreviewSize().height;

    if (mRotation > 0) //flip height and width
    {/*from   w w  w. j  a  v a2  s.c o m*/
        mLastWidth = parameters.getPreviewSize().height;
        mLastHeight = parameters.getPreviewSize().width;
    }

    mPreviewFormat = parameters.getPreviewFormat();

    byte[] dataResult = data;

    if (mPreCompressFrames) {
        if (mRotation > 0) {
            dataResult = rotateYUV420Degree90(data, mLastHeight, mLastWidth);

            if (getCameraDirection() == CameraInfo.CAMERA_FACING_FRONT) {
                dataResult = rotateYUV420Degree90(dataResult, mLastWidth, mLastHeight);
                dataResult = rotateYUV420Degree90(dataResult, mLastHeight, mLastWidth);
            }

        }

        YuvImage yuv = new YuvImage(dataResult, mPreviewFormat, mLastWidth, mLastHeight, null);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        yuv.compressToJpeg(new Rect(0, 0, mLastWidth, mLastHeight), MediaConstants.sJpegQuality, out);
        dataResult = out.toByteArray();
    }

    if (mFramesTotal == 0 && fileOut != null) {
        try {
            info.guardianproject.iocipher.FileOutputStream fosThumb = new info.guardianproject.iocipher.FileOutputStream(
                    new info.guardianproject.iocipher.File(fileOut.getAbsolutePath() + ".thumb.jpg"));
            fosThumb.write(dataResult);
            fosThumb.flush();
            fosThumb.close();

        } catch (Exception e) {

            Log.e("VideoCam", "can't save thumb", e);
        }
    }

    if (mIsRecording && mFrameQ != null)
        synchronized (mFrameQ) {
            if (data != null) {

                VideoFrame vf = new VideoFrame();
                vf.image = dataResult;
                vf.duration = 1;//this is frame duration, not time //System.currentTimeMillis() - lastTime;
                vf.fps = mFPS;

                mFrameQ.add(vf);

                mFramesTotal++;

            }
        }

    mFpsCounter++;
    if ((System.currentTimeMillis() - start) >= 1000) {
        mFPS = mFpsCounter;
        mFpsCounter = 0;
        start = System.currentTimeMillis();
    }

}

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