imageUtils.cpp

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/** \file imageUtils.cpp
 * \author Jared R. Males
 * \brief  Implementation of image processing utilities
 * \ingroup image_processing_files
 *
 */
 
//***********************************************************************//
// Copyright 2021 Jared R. Males (jaredmales@gmail.com)
//
// This file is part of mxlib.
//
// mxlib is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mxlib is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with mxlib.  If not, see <http://www.gnu.org/licenses/>.
//***********************************************************************//
 
#include "improc/imageUtils.hpp"
#include <cstring>
 
namespace mx
{
namespace improc
{
 
void *imcpy( void *dest, void *src, size_t width, size_t height, size_t szof )
{
    return memcpy( dest, src, width * height * szof );
}
 
void *imcpy_flipUD( void *dest, void *src, size_t width, size_t height, size_t szof )
{
    for( size_t rr = 0; rr < height; ++rr )
    {
        memcpy( (char *)dest + rr * width * szof, (char *)src + ( height - 1 - rr ) * width * szof, width * szof );
    }
 
    return dest;
}
 
void *imcpy_flipLR( void *dest, void *src, size_t width, size_t height, size_t szof )
{
    if( szof == 1 )
    {
        uint8_t *d = (uint8_t *)dest;
        uint8_t *s = (uint8_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                d[rr * width + cc] = s[rr * width + ( width - 1 - cc )];
            }
        }
    }
    else if( szof == 2 )
    {
        uint16_t *d = (uint16_t *)dest;
        uint16_t *s = (uint16_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                d[rr * width + cc] = s[rr * width + ( width - 1 - cc )];
            }
        }
    }
    else if( szof == 4 )
    {
        uint32_t *d = (uint32_t *)dest;
        uint32_t *s = (uint32_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                d[rr * width + cc] = s[rr * width + ( width - 1 - cc )];
            }
        }
    }
    else if( szof == 8 )
    {
        uint64_t *d = (uint64_t *)dest;
        uint64_t *s = (uint64_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                d[rr * width + cc] = s[rr * width + ( width - 1 - cc )];
            }
        }
    }
    else
    {
        uint8_t *d = (uint8_t *)dest;
        uint8_t *s = (uint8_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width * szof; cc += szof )
            {
                for( size_t pp = 0; pp < szof; ++pp )
                {
                    d[rr * width * szof + cc + pp] = s[rr * width * szof + ( width * szof - szof - cc ) + pp];
                }
            }
        }
    }
    return dest;
}
 
void *imcpy_flipUDLR( void *dest, void *src, size_t width, size_t height, size_t szof )
{
    if( szof == 1 )
    {
        uint8_t *d = (uint8_t *)dest;
        uint8_t *s = (uint8_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                {
                    d[rr * width + cc] = s[( height - 1 - rr ) * width + ( width - 1 - cc )];
                }
            }
        }
    }
    else if( szof == 2 )
    {
        uint16_t *d = (uint16_t *)dest;
        uint16_t *s = (uint16_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                {
                    d[rr * width + cc] = s[( height - 1 - rr ) * width + ( width - 1 - cc )];
                }
            }
        }
    }
    else if( szof == 4 )
    {
        uint32_t *d = (uint32_t *)dest;
        uint32_t *s = (uint32_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                {
                    d[rr * width + cc] = s[( height - 1 - rr ) * width + ( width - 1 - cc )];
                }
            }
        }
    }
    else if( szof == 8 )
    {
        uint64_t *d = (uint64_t *)dest;
        uint64_t *s = (uint64_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width; ++cc )
            {
                {
                    d[rr * width + cc] = s[( height - 1 - rr ) * width + ( width - 1 - cc )];
                }
            }
        }
    }
    else
    {
        uint8_t *d = (uint8_t *)dest;
        uint8_t *s = (uint8_t *)src;
        for( size_t rr = 0; rr < height; ++rr )
        {
            for( size_t cc = 0; cc < width * szof; cc += szof )
            {
                for( size_t pp = 0; pp < szof; ++pp )
                {
                    d[rr * width * szof + cc + pp] =
                        s[( height - 1 - rr ) * width * szof + ( width * szof - szof - cc ) + pp];
                }
            }
        }
    }
 
    return dest;
}
 
} // namespace improc
} // namespace mx