g723_40_encode_sb_impl.cc

/* -*- c++ -*- */
/*
 * Copyright 2011 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 3, 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., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

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

#include "g723_40_encode_sb_impl.h"
#include <gnuradio/io_signature.h>
#include <limits.h>

namespace gr {
  namespace vocoder {

    g723_40_encode_sb::sptr
    g723_40_encode_sb::make()
    {
      return gnuradio::get_initial_sptr
	(new g723_40_encode_sb_impl());
    }

    g723_40_encode_sb_impl::g723_40_encode_sb_impl()
      : sync_block("vocoder_g723_40_encode_sb",
		      io_signature::make(1, 1, sizeof(short)),
		      io_signature::make(1, 1, sizeof(unsigned char)))
    {
      g72x_init_state(&d_state);
    }

    g723_40_encode_sb_impl::~g723_40_encode_sb_impl()
    {
    }

    int
    g723_40_encode_sb_impl::work(int noutput_items,
				 gr_vector_const_void_star &input_items,
				 gr_vector_void_star &output_items)
    {
      const short *in = (const short*)input_items[0];
      unsigned char *out = (unsigned char*)output_items[0];

      for(int i = 0; i < noutput_items; i++)
	out[i] = g723_40_encoder(in[i], AUDIO_ENCODING_LINEAR, &d_state);

      return noutput_items;
    }

  } /* namespace vocoder */
} /* namespace gr */