Trait exr::image::read::image::LayersReader

pub trait LayersReader {
    type Layers;

    // Required methods
    fn filter_block(
        &self,
        meta: &MetaData,
        tile: TileCoordinates,
        block: BlockIndex,
    ) -> bool;
    fn read_block(
        &mut self,
        headers: &[Header],
        block: UncompressedBlock,
    ) -> UnitResult;
    fn into_layers(self) -> Self::Layers;
}

Processes pixel blocks from a file and accumulates them into a single image layer.

Required Associated Types

type Layers

The type of resulting layers

Required Methods

fn filter_block( &self, meta: &MetaData, tile: TileCoordinates, block: BlockIndex, ) -> bool

Specify whether a single block of pixels should be loaded from the file

fn read_block( &mut self, headers: &[Header], block: UncompressedBlock, ) -> UnitResult

Load a single pixel block, which has not been filtered, into the reader, accumulating the layer

fn into_layers(self) -> Self::Layers

Deliver the final accumulated layers for the image

Implementors

impl<C> LayersReader for AllLayersReader<C>

where C: ChannelsReader,

type Layers = SmallVec<[Layer<<C as ChannelsReader>::Channels>; 2]>

impl<C> LayersReader for FirstValidLayerReader<C>

where C: ChannelsReader,

type Layers = Layer<<C as ChannelsReader>::Channels>