minimodem-mirror/src/databits_binary.c

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/*
* databits_binary.c
*
* Copyright (C) 2012 Kamal Mostafa <kamal@whence.com>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "databits.h"
/*
* Rawbits N-bit binary data decoder/encoder
*/
#include <assert.h>
// returns nbytes decoded
unsigned int
databits_decode_binary( char *dataout_p, unsigned int dataout_size,
unsigned long long bits, unsigned int n_databits )
{
if ( ! dataout_p ) // databits processor reset: noop
return 0;
assert( dataout_size >= n_databits + 1 );
int j;
for ( j=0; j<n_databits; j++ )
dataout_p[j] = (bits>>j & 1) + '0';
dataout_p[j] = '\n';
return n_databits + 1;
}