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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 sflipdima (float *in, int row, int col, int dim, int blk_size, float *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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