Struct MulDiv 

pub struct MulDiv { /* private fields */ }

Methods of this structure used to multiply or divide color-channels (RGB or Luma) by alpha-channel. Supported pixel types: U8x2, U8x4, U16x2, U16x4, F32x2 and F32x4.

By default, the instance of MulDiv created with the best CPU-extension provided by your CPU. You can change this by using method MulDiv::set_cpu_extensions.

Examples

use fast_image_resize::pixels::PixelType;
use fast_image_resize::images::Image;
use fast_image_resize::MulDiv;

let width: u32 = 10;
let height: u32 = 7;
let src_image = Image::new(width, height, PixelType::U8x4);
let mut dst_image = Image::new(width, height, PixelType::U8x4);

let mul_div = MulDiv::new();
mul_div.multiply_alpha(&src_image, &mut dst_image).unwrap();

Implementations

impl MulDiv

pub fn new() -> Self

pub fn cpu_extensions(&self) -> CpuExtensions

pub unsafe fn set_cpu_extensions(&mut self, extensions: CpuExtensions)

Safety

This is unsafe because this method allows you to set a CPU-extensions that is not actually supported by your CPU.

pub fn multiply_alpha( &self, src_image: &impl IntoImageView, dst_image: &mut impl IntoImageViewMut, ) -> Result<(), MulDivImagesError>

Multiplies color-channels (RGB or Luma) of source image by alpha-channel and store result into destination image.

pub fn multiply_alpha_typed<P: PixelTrait>( &self, src_view: &impl ImageView<Pixel = P>, dst_view: &mut impl ImageViewMut<Pixel = P>, ) -> Result<(), MulDivImagesError>

pub fn multiply_alpha_inplace( &self, image: &mut impl IntoImageViewMut, ) -> Result<(), ImageError>

Multiplies color-channels (RGB or Luma) of image by alpha-channel inplace.

pub fn multiply_alpha_inplace_typed<P: PixelTrait>( &self, img_view: &mut impl ImageViewMut<Pixel = P>, ) -> Result<(), ImageError>

pub fn divide_alpha( &self, src_image: &impl IntoImageView, dst_image: &mut impl IntoImageViewMut, ) -> Result<(), MulDivImagesError>

Divides color-channels (RGB or Luma) of source image by alpha-channel and store result into destination image.

pub fn divide_alpha_typed<P: PixelTrait>( &self, src_view: &impl ImageView<Pixel = P>, dst_view: &mut impl ImageViewMut<Pixel = P>, ) -> Result<(), MulDivImagesError>

pub fn divide_alpha_inplace( &self, image: &mut impl IntoImageViewMut, ) -> Result<(), ImageError>

Divides color-channels (RGB or Luma) of image by alpha-channel inplace.

pub fn divide_alpha_inplace_typed<P: PixelTrait>( &self, img_view: &mut impl ImageViewMut<Pixel = P>, ) -> Result<(), ImageError>

pub fn is_supported(&self, pixel_type: PixelType) -> bool

Trait Implementations

impl Clone for MulDiv

fn clone(&self) -> MulDiv

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MulDiv

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

Formats the value using the given formatter.

impl Default for MulDiv

fn default() -> MulDiv

Returns the “default value” for a type.