#![cfg(feature = "lut")]
#![allow(dead_code)]
use crate::conversions::LutBarycentricReduction;
use crate::conversions::interpolator::{BarycentricWeight, MultidimensionalInterpolation};
use crate::conversions::lut_transforms::Lut3x3Factory;
use crate::transform::PointeeSizeExpressible;
use crate::{
BarycentricWeightScale, CmsError, DataColorSpace, InterpolationMethod, Layout,
TransformExecutor, TransformOptions,
};
use num_traits::AsPrimitive;
use std::marker::PhantomData;
use std::sync::Arc;
pub(crate) struct TransformLut3x3<
T,
U,
const SRC_LAYOUT: u8,
const DST_LAYOUT: u8,
const GRID_SIZE: usize,
const BIT_DEPTH: usize,
const BINS: usize,
const BARYCENTRIC_BINS: usize,
> {
pub(crate) lut: Vec<f32>,
pub(crate) _phantom: PhantomData<T>,
pub(crate) _phantom1: PhantomData<U>,
pub(crate) interpolation_method: InterpolationMethod,
pub(crate) weights: Box<[BarycentricWeight<f32>; BINS]>,
pub(crate) color_space: DataColorSpace,
pub(crate) is_linear: bool,
}
impl<
T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
U: AsPrimitive<usize>,
const SRC_LAYOUT: u8,
const DST_LAYOUT: u8,
const GRID_SIZE: usize,
const BIT_DEPTH: usize,
const BINS: usize,
const BARYCENTRIC_BINS: usize,
> TransformLut3x3<T, U, SRC_LAYOUT, DST_LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
where
f32: AsPrimitive<T>,
u32: AsPrimitive<T>,
(): LutBarycentricReduction<T, U>,
{
#[inline(never)]
fn transform_chunk(
&self,
src: &[T],
dst: &mut [T],
interpolator: Box<dyn MultidimensionalInterpolation + Send + Sync>,
) {
let src_cn = Layout::from(SRC_LAYOUT);
let src_channels = src_cn.channels();
let dst_cn = Layout::from(DST_LAYOUT);
let dst_channels = dst_cn.channels();
let value_scale = ((1 << BIT_DEPTH) - 1) as f32;
let max_value = ((1u32 << BIT_DEPTH) - 1).as_();
for (src, dst) in src
.chunks_exact(src_channels)
.zip(dst.chunks_exact_mut(dst_channels))
{
let x = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
src[src_cn.r_i()],
);
let y = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
src[src_cn.g_i()],
);
let z = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
src[src_cn.b_i()],
);
let a = if src_channels == 4 {
src[src_cn.a_i()]
} else {
max_value
};
let v = interpolator.inter3(
&self.lut,
&self.weights[x.as_()],
&self.weights[y.as_()],
&self.weights[z.as_()],
);
if T::FINITE {
let r = v * value_scale + 0.5;
dst[dst_cn.r_i()] = r.v[0].min(value_scale).max(0.).as_();
dst[dst_cn.g_i()] = r.v[1].min(value_scale).max(0.).as_();
dst[dst_cn.b_i()] = r.v[2].min(value_scale).max(0.).as_();
if dst_channels == 4 {
dst[dst_cn.a_i()] = a;
}
} else {
dst[dst_cn.r_i()] = v.v[0].as_();
dst[dst_cn.g_i()] = v.v[1].as_();
dst[dst_cn.b_i()] = v.v[2].as_();
if dst_channels == 4 {
dst[dst_cn.a_i()] = a;
}
}
}
}
}
impl<
T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
U: AsPrimitive<usize>,
const SRC_LAYOUT: u8,
const DST_LAYOUT: u8,
const GRID_SIZE: usize,
const BIT_DEPTH: usize,
const BINS: usize,
const BARYCENTRIC_BINS: usize,
> TransformExecutor<T>
for TransformLut3x3<T, U, SRC_LAYOUT, DST_LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
where
f32: AsPrimitive<T>,
u32: AsPrimitive<T>,
(): LutBarycentricReduction<T, U>,
{
fn transform(&self, src: &[T], dst: &mut [T]) -> Result<(), CmsError> {
let src_cn = Layout::from(SRC_LAYOUT);
let src_channels = src_cn.channels();
let dst_cn = Layout::from(DST_LAYOUT);
let dst_channels = dst_cn.channels();
if src.len() % src_channels != 0 {
return Err(CmsError::LaneMultipleOfChannels);
}
if dst.len() % dst_channels != 0 {
return Err(CmsError::LaneMultipleOfChannels);
}
let src_chunks = src.len() / src_channels;
let dst_chunks = dst.len() / dst_channels;
if src_chunks != dst_chunks {
return Err(CmsError::LaneSizeMismatch);
}
if self.color_space == DataColorSpace::Lab
|| (self.is_linear && self.color_space == DataColorSpace::Rgb)
|| self.color_space == DataColorSpace::Xyz
{
use crate::conversions::interpolator::Trilinear;
self.transform_chunk(src, dst, Box::new(Trilinear::<GRID_SIZE> {}));
} else {
match self.interpolation_method {
#[cfg(feature = "options")]
InterpolationMethod::Tetrahedral => {
use crate::conversions::interpolator::Tetrahedral;
self.transform_chunk(src, dst, Box::new(Tetrahedral::<GRID_SIZE> {}));
}
#[cfg(feature = "options")]
InterpolationMethod::Pyramid => {
use crate::conversions::interpolator::Pyramidal;
self.transform_chunk(src, dst, Box::new(Pyramidal::<GRID_SIZE> {}));
}
#[cfg(feature = "options")]
InterpolationMethod::Prism => {
use crate::conversions::interpolator::Prismatic;
self.transform_chunk(src, dst, Box::new(Prismatic::<GRID_SIZE> {}));
}
InterpolationMethod::Linear => {
use crate::conversions::interpolator::Trilinear;
self.transform_chunk(src, dst, Box::new(Trilinear::<GRID_SIZE> {}));
}
}
}
Ok(())
}
}
pub(crate) struct DefaultLut3x3Factory {}
impl Lut3x3Factory for DefaultLut3x3Factory {
fn make_transform_3x3<
T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible + 'static + Send + Sync,
const SRC_LAYOUT: u8,
const DST_LAYOUT: u8,
const GRID_SIZE: usize,
const BIT_DEPTH: usize,
>(
lut: Vec<f32>,
options: TransformOptions,
color_space: DataColorSpace,
is_linear: bool,
) -> Arc<dyn TransformExecutor<T> + Send + Sync>
where
f32: AsPrimitive<T>,
u32: AsPrimitive<T>,
(): LutBarycentricReduction<T, u8>,
(): LutBarycentricReduction<T, u16>,
{
match options.barycentric_weight_scale {
BarycentricWeightScale::Low => Arc::new(TransformLut3x3::<
T,
u8,
SRC_LAYOUT,
DST_LAYOUT,
GRID_SIZE,
BIT_DEPTH,
256,
256,
> {
lut,
_phantom: PhantomData,
_phantom1: PhantomData,
interpolation_method: options.interpolation_method,
weights: BarycentricWeight::<f32>::create_ranged_256::<GRID_SIZE>(),
color_space,
is_linear,
}),
#[cfg(feature = "options")]
BarycentricWeightScale::High => Arc::new(TransformLut3x3::<
T,
u16,
SRC_LAYOUT,
DST_LAYOUT,
GRID_SIZE,
BIT_DEPTH,
65536,
65536,
> {
lut,
_phantom: PhantomData,
_phantom1: PhantomData,
interpolation_method: options.interpolation_method,
weights: BarycentricWeight::<f32>::create_binned::<GRID_SIZE, 65536>(),
color_space,
is_linear,
}),
}
}
}