Struct MaskData 

pub struct MaskData<'a> {
    pub bpp: u8,
    pub is_packed: bool,
    pub data: &'a [u8],
}

A single channel alpha mask.

Fields

bpp: u8

Number of bits-per-pixel. Always 1, 2, 4 or 8.

is_packed: bool

True if each row of the data is bit-aligned. Otherwise, each row is padded to the next byte.

data: &'a [u8]

Raw bitmap data.

Implementations

impl MaskData<'_>

pub fn decode_to_slice( &self, width: u32, height: u32, dst: &mut [u8], ) -> Result<(), MaskDataDecodeError>

Decodes the raw packed bitmap data into 8-bit-per-pixel values, writing the result into the provided buffer.

The buffer must be at least width * height bytes long. Each pixel value is scaled to the 0–255 range.

pub fn decode( &self, width: u32, height: u32, ) -> Result<Vec<u8>, MaskDataDecodeError>

Decodes the raw packed bitmap data into 8-bit-per-pixel values.

Returns a Vec<u8> of width * height bytes, with each pixel value scaled to the 0–255 range.

Trait Implementations

impl<'a> Clone for MaskData<'a>

fn clone(&self) -> MaskData<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.