Examples with Camera android.hardware.Camera used on opensource projects

Example 41 with Camera

use of android.hardware.Camera in project barcodescanner by dm77.

the class ZBarScannerView method onPreviewFrame.

@Override
public void onPreviewFrame(byte[] data, Camera camera) {
    if (mResultHandler == null) {
        return;
    }
    try {
        Camera.Parameters parameters = camera.getParameters();
        Camera.Size size = parameters.getPreviewSize();
        int width = size.width;
        int height = size.height;
        if (DisplayUtils.getScreenOrientation(getContext()) == Configuration.ORIENTATION_PORTRAIT) {
            int rotationCount = getRotationCount();
            if (rotationCount == 1 || rotationCount == 3) {
                int tmp = width;
                width = height;
                height = tmp;
            }
            data = getRotatedData(data, camera);
        }
        Rect rect = getFramingRectInPreview(width, height);
        Image barcode = new Image(width, height, "Y800");
        barcode.setData(data);
        barcode.setCrop(rect.left, rect.top, rect.width(), rect.height());
        int result = mScanner.scanImage(barcode);
        if (result != 0) {
            SymbolSet syms = mScanner.getResults();
            final Result rawResult = new Result();
            for (Symbol sym : syms) {
                // In order to retreive QR codes containing null bytes we need to
                // use getDataBytes() rather than getData() which uses C strings.
                // Weirdly ZBar transforms all data to UTF-8, even the data returned
                // by getDataBytes() so we have to decode it as UTF-8.
                String symData;
                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
                    symData = new String(sym.getDataBytes(), StandardCharsets.UTF_8);
                } else {
                    symData = sym.getData();
                }
                if (!TextUtils.isEmpty(symData)) {
                    rawResult.setContents(symData);
                    rawResult.setBarcodeFormat(BarcodeFormat.getFormatById(sym.getType()));
                    break;
                }
            }
            Handler handler = new Handler(Looper.getMainLooper());
            handler.post(new Runnable() {

                @Override
                public void run() {
                    // Stopping the preview can take a little long.
                    // So we want to set result handler to null to discard subsequent calls to
                    // onPreviewFrame.
                    ResultHandler tmpResultHandler = mResultHandler;
                    mResultHandler = null;
                    stopCameraPreview();
                    if (tmpResultHandler != null) {
                        tmpResultHandler.handleResult(rawResult);
                    }
                }
            });
        } else {
            camera.setOneShotPreviewCallback(this);
        }
    } catch (RuntimeException e) {
        // TODO: Terrible hack. It is possible that this method is invoked after camera is released.
        Log.e(TAG, e.toString(), e);
    }
}

Example 42 with Camera

use of android.hardware.Camera in project streaming-android by red5pro.

the class PublishCameraSwapTest method openBackFacingCameraGingerbread.

protected Camera openBackFacingCameraGingerbread() {
    int cameraCount = 0;
    Camera cam = null;
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    cameraCount = Camera.getNumberOfCameras();
    System.out.println("Number of cameras: " + cameraCount);
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) {
        Camera.getCameraInfo(camIdx, cameraInfo);
        if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
            try {
                cam = Camera.open(camIdx);
                camOrientation = cameraInfo.orientation;
                applyInverseDeviceRotation();
                break;
            } catch (RuntimeException e) {
                e.printStackTrace();
            }
        }
    }
    return cam;
}

Example 43 with Camera

use of android.hardware.Camera in project streaming-android by red5pro.

the class PublishCameraSwapTest method onPublishTouch.

private boolean onPublishTouch(MotionEvent e) {
    if (e.getAction() == MotionEvent.ACTION_UP && publish != null) {
        R5Camera publishCam = (R5Camera) publish.getVideoSource();
        Camera newCam = null;
        // NOTE: Some devices will throw errors if you have a camera open when you attempt to open another
        publishCam.getCamera().stopPreview();
        publishCam.getCamera().release();
        // NOTE: The front facing camera needs to be 180 degrees further rotated than the back facing camera
        int rotate = 0;
        if (currentCamMode == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            newCam = openBackFacingCameraGingerbread();
            rotate = 0;
            if (newCam != null)
                currentCamMode = Camera.CameraInfo.CAMERA_FACING_BACK;
        } else {
            newCam = openFrontFacingCameraGingerbread();
            rotate = 180;
            if (newCam != null)
                currentCamMode = Camera.CameraInfo.CAMERA_FACING_FRONT;
        }
        if (newCam != null) {
            newCam.setDisplayOrientation((camOrientation + rotate) % 360);
            publishCam.setCamera(newCam);
            publishCam.setOrientation(camOrientation);
            newCam.startPreview();
        }
    }
    return true;
}

Example 44 with Camera

use of android.hardware.Camera in project bitcoin-wallet by bitcoin-wallet.

the class CameraManager method open.

public Camera open(final TextureView textureView, final int displayOrientation) throws IOException {
    final int cameraId = determineCameraId();
    Camera.getCameraInfo(cameraId, cameraInfo);
    log.info("opening camera id {}: {}-facing, camera orientation: {}, display orientation: {}", cameraId, cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK ? "back" : "front", cameraInfo.orientation, displayOrientation);
    camera = Camera.open(cameraId);
    if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT)
        camera.setDisplayOrientation((720 - displayOrientation - cameraInfo.orientation) % 360);
    else if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK)
        camera.setDisplayOrientation((720 - displayOrientation + cameraInfo.orientation) % 360);
    else
        throw new IllegalStateException("facing: " + cameraInfo.facing);
    camera.setPreviewTexture(textureView.getSurfaceTexture());
    final Camera.Parameters parameters = camera.getParameters();
    cameraResolution = findBestPreviewSizeValue(parameters, textureView.getWidth(), textureView.getHeight());
    final int width = textureView.getWidth();
    final int height = textureView.getHeight();
    final int rawSize = Math.min(width * 2 / 3, height * 2 / 3);
    final int frameSize = Math.max(MIN_FRAME_SIZE, Math.min(MAX_FRAME_SIZE, rawSize));
    final int leftOffset = (width - frameSize) / 2;
    final int topOffset = (height - frameSize) / 2;
    frame = new Rect(leftOffset, topOffset, leftOffset + frameSize, topOffset + frameSize);
    framePreview = new RectF(frame.left * cameraResolution.width / width, frame.top * cameraResolution.height / height, frame.right * cameraResolution.width / width, frame.bottom * cameraResolution.height / height);
    final String savedParameters = parameters == null ? null : parameters.flatten();
    try {
        setDesiredCameraParameters(camera, cameraResolution);
    } catch (final RuntimeException x) {
        if (savedParameters != null) {
            final Camera.Parameters parameters2 = camera.getParameters();
            parameters2.unflatten(savedParameters);
            try {
                camera.setParameters(parameters2);
                setDesiredCameraParameters(camera, cameraResolution);
            } catch (final RuntimeException x2) {
                log.info("problem setting camera parameters", x2);
            }
        }
    }
    try {
        camera.startPreview();
        return camera;
    } catch (final RuntimeException x) {
        log.warn("something went wrong while starting camera preview", x);
        camera.release();
        throw x;
    }
}

Example 45 with Camera

use of android.hardware.Camera in project BoofCV by lessthanoptimal.

the class VideoActivity method openConfigureCamera.

@Override
protected Camera openConfigureCamera(Camera.CameraInfo cameraInfo) {
    Camera mCamera = selectAndOpenCamera(cameraInfo);
    Camera.Parameters param = mCamera.getParameters();
    // Select the preview size closest to 320x240
    // Smaller images are recommended because some computer vision operations are very expensive
    List<Camera.Size> sizes = param.getSupportedPreviewSizes();
    Camera.Size s = sizes.get(closest(sizes, 320, 240));
    param.setPreviewSize(s.width, s.height);
    mCamera.setParameters(param);
    return mCamera;
}