/*

* Simd Library (http://ermig1979.github.io/Simd).

*

* Copyright (c) 2011-2023 Yermalayeu Ihar.

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

* SOFTWARE.

*/

#include "Simd/SimdGrayToY.h"

#include "Simd/SimdStore.h"

namespace Simd

{

#ifdef SIMD_AVX2_ENABLE    

    namespace Avx2

    {

        void GrayToY(const uint8_t* gray, size_t grayStride, size_t width, size_t height, uint8_t* y, size_t yStride)

        {

            assert(width >= A);

            size_t widthA = AlignLo(width, A);

            for (size_t row = 0; row < height; ++row)

            {

                for (size_t col = 0; col < widthA; col += A)

                    _mm256_storeu_si256((__m256i*)(y + col), GrayToY(_mm256_loadu_si256((__m256i*)(gray + col))));

                if (widthA < width)

                {

                    size_t col = width - A;

                    _mm256_storeu_si256((__m256i*)(y + col), GrayToY(_mm256_loadu_si256((__m256i*)(gray + col))));

                }

                gray += grayStride;

                y += yStride;

            }

        }

    }

#endif

}