gr_mute_ff.cc

gnuradio软件无线电源程序.现在的手机多基于软件无线电

/* -*- c++ -*- */
/*
 * Copyright 2004 Free Software Foundation, Inc.
 * 
 * This file is part of GNU Radio
 * 
 * GNU Radio 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, or (at your option)
 * any later version.
 * 
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

// WARNING: this file is machine generated.  Edits will be over written

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gr_mute_ff.h>
#include <gr_io_signature.h>
#include <string.h>


gr_mute_ff_sptr
gr_make_mute_ff (bool mute)
{
  return gr_mute_ff_sptr (new gr_mute_ff (mute));
}

gr_mute_ff::gr_mute_ff (bool mute)
  : gr_sync_block ("mute_ff",
		   gr_make_io_signature (1, 1, sizeof (float)),
		   gr_make_io_signature (1, 1, sizeof (float))),
    d_mute (mute)
{
}

int
gr_mute_ff::work (int noutput_items,
		   gr_vector_const_void_star &input_items,
		   gr_vector_void_star &output_items)
{
  float *iptr = (float *) input_items[0];
  float *optr = (float *) output_items[0];

  int	size = noutput_items;

  if (d_mute){
    memset (optr, 0, noutput_items * sizeof(float));
  }
  else {
    while (size >= 8){
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      *optr++ = *iptr++;
      size -= 8;
    }

    while (size-- > 0)
      *optr++ = *iptr++;
  }
  
  return noutput_items;
}