/*
 * // Copyright (c) Radzivon Bartoshyk 6/2025. All rights reserved.
 * //
 * // Redistribution and use in source and binary forms, with or without modification,
 * // are permitted provided that the following conditions are met:
 * //
 * // 1.  Redistributions of source code must retain the above copyright notice, this
 * // list of conditions and the following disclaimer.
 * //
 * // 2.  Redistributions in binary form must reproduce the above copyright notice,
 * // this list of conditions and the following disclaimer in the documentation
 * // and/or other materials provided with the distribution.
 * //
 * // 3.  Neither the name of the copyright holder nor the names of its
 * // contributors may be used to endorse or promote products derived from
 * // this software without specific prior written permission.
 * //
 * // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
use crate::{CmsError, InPlaceStage, Lab, Xyz};

#[derive(Default)]
pub(crate) struct StageLabToXyz {}

impl InPlaceStage for StageLabToXyz {
    fn transform(&self, dst: &mut [f32]) -> Result<(), CmsError> {
        for dst in dst.chunks_exact_mut(3) {
            let lab = Lab::new(dst[0], dst[1], dst[2]);
            let xyz = lab.to_pcs_xyz();
            dst[0] = xyz.x;
            dst[1] = xyz.y;
            dst[2] = xyz.z;
        }
        Ok(())
    }
}

#[derive(Default)]
pub(crate) struct StageXyzToLab {}

impl InPlaceStage for StageXyzToLab {
    fn transform(&self, dst: &mut [f32]) -> Result<(), CmsError> {
        for dst in dst.chunks_exact_mut(3) {
            let xyz = Xyz::new(dst[0], dst[1], dst[2]);
            let lab = Lab::from_pcs_xyz(xyz);
            dst[0] = lab.l;
            dst[1] = lab.a;
            dst[2] = lab.b;
        }
        Ok(())
    }
}
