Struct GainMap 

pub struct GainMap {
    pub width: u32,
    pub height: u32,
    pub channels: u8,
    pub data: Vec<u8>,
}

A gain map image (8-bit grayscale or per-channel).

Kept bespoke: gain map bytes are log2-quantized gain, not color samples, so a PixelBuffer descriptor would misrepresent them.

Fields

width: u32

Width of the gain map (may be smaller than base image).

height: u32

Height of the gain map.

channels: u8

Number of channels (1 for luminance-only, 3 for per-channel RGB).

data: Vec<u8>

Pixel data (u8 values 0-255).

Implementations

impl GainMap

pub fn new(width: u32, height: u32) -> Result<Self>

Create a new single-channel gain map.

pub fn new_multichannel(width: u32, height: u32) -> Result<Self>

Create a new multi-channel (RGB) gain map.

Trait Implementations

impl Clone for GainMap

fn clone(&self) -> GainMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GainMap

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

Formats the value using the given formatter.