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/******************************************************************************/
/* */
/* University of Kaiserslautern, Institute of Communications Engineering */
/* Copyright (C) 2004 Torsten Schorr */
/* */
/* Author(s) : Torsten Schorr (schorr@eit.uni-kl.de) */
/* Project start: 23.07.2004 */
/* Last change : 23.07.2004 */
/* */
/******************************************************************************/
/* */
/* This program 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 2 of the License, or */
/* (at your option) any later version. */
/* */
/* This program 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 this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* */
/******************************************************************************/
/******************************************************************************/
/* */
/* bits2bytes.c */
/* */
/******************************************************************************/
/* Description: */
/* Deinterleaver/Interleaver generation for DRM frames */
/* Usage: */
/* */
/* bytes = bits2bytes(bits); */
/* */
/* converts a serial double bit-stream into a uint8 byte-stream */
/******************************************************************************/
/*
* modified for use directly in C-language without Matlab interface
* M.Bos - PA0MBO
* Date Nov 15th 2007
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <float.h>
void bits2bytes(double *inbits, int N, unsigned char /*@out@ */ *outbytes)
{
unsigned char single_byte;
int m, n;
if (N % 8 != 0)
{
return;
}
for (m = 0; m < N / 8; m++)
{
single_byte = '\0';
for (n = 7; n >= 0; n--)
{
single_byte |=
((fabs(inbits[8 * m + 7 - n]) > DBL_EPSILON) & 0x01) << n;
}
outbytes[m] = single_byte;
}
return;
}
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