/*

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

*

* Copyright (c) 2011-2021 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/SimdConversion.h"

namespace Simd

{

    namespace Base

    {

        void BgraToGray(const uint8_t * bgra, size_t width, size_t height, size_t bgraStride, uint8_t * gray, size_t grayStride)

        {

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

            {

                const uint8_t * pBgra = bgra + row*bgraStride;

                uint8_t * pGray = gray + row*grayStride;

                for (const uint8_t *pGrayEnd = pGray + width; pGray < pGrayEnd; pGray += 1, pBgra += 4)

                {

                    *pGray = BgrToGray(pBgra[0], pBgra[1], pBgra[2]);

                }

            }

        }

        void RgbaToGray(const uint8_t* rgba, size_t width, size_t height, size_t rgbaStride, uint8_t* gray, size_t grayStride)

        {

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

            {

                const uint8_t* pRgba = rgba + row * rgbaStride;

                uint8_t* pGray = gray + row * grayStride;

                for (const uint8_t* pGrayEnd = pGray + width; pGray < pGrayEnd; pGray += 1, pRgba += 4)

                {

                    *pGray = BgrToGray(pRgba[2], pRgba[1], pRgba[0]);

                }

            }

        }

    }

}