Struct rxing::RGBLuminanceSource

pub struct RGBLuminanceSource { /* private fields */ }

This class is used to help decode images from files which arrive as RGB data from an ARGB pixel array. It does not support rotation.

@author dswitkin@google.com (Daniel Switkin) @author Betaminos

Implementations

impl RGBLuminanceSource

pub fn new_with_width_height_pixels( width: usize, height: usize, pixels: &[u32] ) -> Self

Trait Implementations

impl Clone for RGBLuminanceSource

fn clone(&self) -> RGBLuminanceSource

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RGBLuminanceSource

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl LuminanceSource for RGBLuminanceSource

fn get_row(&self, y: usize) -> Vec<u8>

gets a row, returns an empty row if we are out of bounds.

fn get_matrix(&self) -> Vec<u8>

Fetches luminance data for the underlying bitmap. Values should be fetched using: {@code int luminance = array[y * width + x] & 0xff}

fn get_width(&self) -> usize

@return The width of the bitmap.

fn get_height(&self) -> usize

@return The height of the bitmap.

fn is_crop_supported(&self) -> bool

@return Whether this subclass supports cropping.

fn crop( &self, left: usize, top: usize, width: usize, height: usize ) -> Result<Self>

Returns a new object with cropped image data. Implementations may keep a reference to the original data rather than a copy. Only callable if isCropSupported() is true.

fn invert(&mut self)

@return a wrapper of this {@code LuminanceSource} which inverts the luminances it returns – black becomes white and vice versa, and each value becomes (255-value).

fn is_rotate_supported(&self) -> bool

@return Whether this subclass supports counter-clockwise rotation.

fn rotate_counter_clockwise(&self) -> Result<Self>

where Self: Sized,

Returns a new object with rotated image data by 90 degrees counterclockwise. Only callable if {@link #isRotateSupported()} is true.

fn rotate_counter_clockwise_45(&self) -> Result<Self>

where Self: Sized,

Returns a new object with rotated image data by 45 degrees counterclockwise. Only callable if {@link #isRotateSupported()} is true.

fn invert_block_of_bytes(&self, vec_to_invert: Vec<u8>) -> Vec<u8>