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// Copyright (C) 2016 - IIT Bombay - FOSSEE
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
// Author: Siddhesh Wani
// Organization: FOSSEE, IIT Bombay
// Email: toolbox@scilab.in
//Function flips the input matrix along given dimension
#include "flipdim.h"
void u8flipdima (uint8 *in, int row, int col, int dim, int blk_size, uint8 *out)
{
int col_count = 0, row_count = 0, blk_count = 0, count = 0;
if(dim == 1) //flip rows
{
if(blk_size == 1)
{
for(col_count = 0; col_count < col; col_count++)
{
for(row_count = 0; row_count< row;row_count++)
{
out[col_count*row+row_count] = in[col_count*row+(row - row_count - 1)];
}
}
}
else //block size is more than 1
{
for(col_count = 0; col_count < col; col_count++)
{
count = blk_size;
blk_count = 0;
for(row_count = 0; row_count< row;row_count++)
{
out[col_count*row+row_count] = in[col_count*row+(row - blk_count*blk_size - count)];
if(--count == 0)
{
blk_count += 1;
count = blk_size;
}
}
}
}
}
else if(dim == 2) //flip columns
{
if(blk_size == 1)
{
for(col_count = 0; col_count < col; col_count++)
{
for(row_count = 0; row_count< row;row_count++)
{
out[col_count*row+row_count] = in[(col- col_count - 1)*row+row_count];
}
}
}
else
{
count = blk_size;
blk_count = 0;
for(col_count = 0; col_count < col; col_count++)
{
for(row_count = 0; row_count< row;row_count++)
{
out[col_count*row+row_count] = in[(col - blk_count*blk_size - count)*row+row_count];
}
if(--count == 0)
{
count = blk_size;
blk_count += 1;
}
}
}
}
}
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