Examples with Size com.google.android.gms.common.images.Size used on opensource projects

Example 1 with Size

use of com.google.android.gms.common.images.Size in project android-vision by googlesamples.

the class CameraSourcePreview method startIfReady.

private void startIfReady() throws IOException {
    if (mStartRequested && mSurfaceAvailable) {
        mCameraSource.start(mSurfaceView.getHolder());
        if (mOverlay != null) {
            Size size = mCameraSource.getPreviewSize();
            int min = Math.min(size.getWidth(), size.getHeight());
            int max = Math.max(size.getWidth(), size.getHeight());
            if (isPortraitMode()) {
                // Swap width and height sizes when in portrait, since it will be rotated by
                // 90 degrees
                mOverlay.setCameraInfo(min, max, mCameraSource.getCameraFacing());
            } else {
                mOverlay.setCameraInfo(max, min, mCameraSource.getCameraFacing());
            }
            mOverlay.clear();
        }
        mStartRequested = false;
    }
}

Example 2 with Size

use of com.google.android.gms.common.images.Size in project android-vision by googlesamples.

the class CameraSourcePreview method onLayout.

@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    int width = 320;
    int height = 240;
    if (mCameraSource != null) {
        Size size = mCameraSource.getPreviewSize();
        if (size != null) {
            width = size.getWidth();
            height = size.getHeight();
        }
    }
    // Swap width and height sizes when in portrait, since it will be rotated 90 degrees
    if (isPortraitMode()) {
        int tmp = width;
        width = height;
        height = tmp;
    }
    final int layoutWidth = right - left;
    final int layoutHeight = bottom - top;
    // Computes height and width for potentially doing fit width.
    int childWidth = layoutWidth;
    int childHeight = (int) (((float) layoutWidth / (float) width) * height);
    // If height is too tall using fit width, does fit height instead.
    if (childHeight > layoutHeight) {
        childHeight = layoutHeight;
        childWidth = (int) (((float) layoutHeight / (float) height) * width);
    }
    for (int i = 0; i < getChildCount(); ++i) {
        getChildAt(i).layout(0, 0, childWidth, childHeight);
    }
    try {
        startIfReady();
    } catch (IOException e) {
        Log.e(TAG, "Could not start camera source.", e);
    }
}

Example 3 with Size

use of com.google.android.gms.common.images.Size in project android-vision by googlesamples.

the class CameraSource method createCamera.

/**
     * Opens the camera and applies the user settings.
     *
     * @throws RuntimeException if the method fails
     */
@SuppressLint("InlinedApi")
private Camera createCamera() {
    int requestedCameraId = getIdForRequestedCamera(mFacing);
    if (requestedCameraId == -1) {
        throw new RuntimeException("Could not find requested camera.");
    }
    Camera camera = Camera.open(requestedCameraId);
    SizePair sizePair = selectSizePair(camera, mRequestedPreviewWidth, mRequestedPreviewHeight);
    if (sizePair == null) {
        throw new RuntimeException("Could not find suitable preview size.");
    }
    Size pictureSize = sizePair.pictureSize();
    mPreviewSize = sizePair.previewSize();
    int[] previewFpsRange = selectPreviewFpsRange(camera, mRequestedFps);
    if (previewFpsRange == null) {
        throw new RuntimeException("Could not find suitable preview frames per second range.");
    }
    Camera.Parameters parameters = camera.getParameters();
    if (pictureSize != null) {
        parameters.setPictureSize(pictureSize.getWidth(), pictureSize.getHeight());
    }
    parameters.setPreviewSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
    parameters.setPreviewFpsRange(previewFpsRange[Camera.Parameters.PREVIEW_FPS_MIN_INDEX], previewFpsRange[Camera.Parameters.PREVIEW_FPS_MAX_INDEX]);
    parameters.setPreviewFormat(ImageFormat.NV21);
    setRotation(camera, parameters, requestedCameraId);
    if (mFocusMode != null) {
        if (parameters.getSupportedFocusModes().contains(mFocusMode)) {
            parameters.setFocusMode(mFocusMode);
        } else {
            Log.i(TAG, "Camera focus mode: " + mFocusMode + " is not supported on this device.");
        }
    }
    // setting mFocusMode to the one set in the params
    mFocusMode = parameters.getFocusMode();
    if (mFlashMode != null) {
        if (parameters.getSupportedFlashModes() != null) {
            if (parameters.getSupportedFlashModes().contains(mFlashMode)) {
                parameters.setFlashMode(mFlashMode);
            } else {
                Log.i(TAG, "Camera flash mode: " + mFlashMode + " is not supported on this device.");
            }
        }
    }
    // setting mFlashMode to the one set in the params
    mFlashMode = parameters.getFlashMode();
    camera.setParameters(parameters);
    // Four frame buffers are needed for working with the camera:
    //
    //   one for the frame that is currently being executed upon in doing detection
    //   one for the next pending frame to process immediately upon completing detection
    //   two for the frames that the camera uses to populate future preview images
    camera.setPreviewCallbackWithBuffer(new CameraPreviewCallback());
    camera.addCallbackBuffer(createPreviewBuffer(mPreviewSize));
    camera.addCallbackBuffer(createPreviewBuffer(mPreviewSize));
    camera.addCallbackBuffer(createPreviewBuffer(mPreviewSize));
    camera.addCallbackBuffer(createPreviewBuffer(mPreviewSize));
    return camera;
}

Example 4 with Size

use of com.google.android.gms.common.images.Size in project android-vision by googlesamples.

the class CameraSourcePreview method onLayout.

@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    int width = 320;
    int height = 240;
    if (mCameraSource != null) {
        Size size = mCameraSource.getPreviewSize();
        if (size != null) {
            width = size.getWidth();
            height = size.getHeight();
        }
    }
    // Swap width and height sizes when in portrait, since it will be rotated 90 degrees
    if (isPortraitMode()) {
        int tmp = width;
        width = height;
        height = tmp;
    }
    final int layoutWidth = right - left;
    final int layoutHeight = bottom - top;
    // Computes height and width for potentially doing fit width.
    int childWidth = layoutWidth;
    int childHeight = (int) (((float) layoutWidth / (float) width) * height);
    // If height is too tall using fit width, does fit height instead.
    if (childHeight > layoutHeight) {
        childHeight = layoutHeight;
        childWidth = (int) (((float) layoutHeight / (float) height) * width);
    }
    for (int i = 0; i < getChildCount(); ++i) {
        getChildAt(i).layout(0, 0, childWidth, childHeight);
    }
    try {
        startIfReady();
    } catch (IOException e) {
        Log.e(TAG, "Could not start camera source.", e);
    }
}

Example 5 with Size

use of com.google.android.gms.common.images.Size in project android-vision by googlesamples.

the class CameraSource method selectSizePair.

/**
     * Selects the most suitable preview and picture size, given the desired width and height.
     * <p/>
     * Even though we may only need the preview size, it's necessary to find both the preview
     * size and the picture size of the camera together, because these need to have the same aspect
     * ratio.  On some hardware, if you would only set the preview size, you will get a distorted
     * image.
     *
     * @param camera        the camera to select a preview size from
     * @param desiredWidth  the desired width of the camera preview frames
     * @param desiredHeight the desired height of the camera preview frames
     * @return the selected preview and picture size pair
     */
private static SizePair selectSizePair(Camera camera, int desiredWidth, int desiredHeight) {
    List<SizePair> validPreviewSizes = generateValidPreviewSizeList(camera);
    // The method for selecting the best size is to minimize the sum of the differences between
    // the desired values and the actual values for width and height.  This is certainly not the
    // only way to select the best size, but it provides a decent tradeoff between using the
    // closest aspect ratio vs. using the closest pixel area.
    SizePair selectedPair = null;
    int minDiff = Integer.MAX_VALUE;
    for (SizePair sizePair : validPreviewSizes) {
        Size size = sizePair.previewSize();
        int diff = Math.abs(size.getWidth() - desiredWidth) + Math.abs(size.getHeight() - desiredHeight);
        if (diff < minDiff) {
            selectedPair = sizePair;
            minDiff = diff;
        }
    }
    return selectedPair;
}