/* -*- c++ -*- */

/*

 * Copyright 2005 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 <gr_fake_channel_coder_pp.h>

#include <gr_io_signature.h>

#include <string.h>

#include <stdexcept>

#include <string.h>

static const int PAD_VAL = 0xAA;

gr_fake_channel_encoder_pp_sptr

gr_make_fake_channel_encoder_pp(int input_vlen, int output_vlen)

{

  return gr_fake_channel_encoder_pp_sptr(new gr_fake_channel_encoder_pp(input_vlen,

                                                                        output_vlen));

}

gr_fake_channel_encoder_pp::gr_fake_channel_encoder_pp(int input_vlen, int output_vlen)

  : gr_sync_block("fake_channel_encoder_pp",

                  gr_make_io_signature(1, 1, input_vlen * sizeof(unsigned char)),

                  gr_make_io_signature(1, 1, output_vlen * sizeof(unsigned char))),

    d_input_vlen(input_vlen), d_output_vlen(output_vlen)

{

  if (input_vlen <= 0 || output_vlen <= 0 || input_vlen > output_vlen)

    throw std::invalid_argument("gr_fake_channel_encoder_pp");

}

gr_fake_channel_encoder_pp::~gr_fake_channel_encoder_pp()

{

}

int

gr_fake_channel_encoder_pp::work (int noutput_items,

                                  gr_vector_const_void_star &input_items,

                                  gr_vector_void_star &output_items)

{

  const unsigned char *in = (const unsigned char *) input_items[0];

  unsigned char *out = (unsigned char *) output_items[0];

  int        npad = d_output_vlen - d_input_vlen;

  for (int i = 0; i < noutput_items; i++){

    memcpy(out, in, d_input_vlen);

    memset(out + d_input_vlen, PAD_VAL, npad);

    in += d_input_vlen;

    out += d_output_vlen;

  }

  return noutput_items;

}

// ------------------------------------------------------------------------

gr_fake_channel_decoder_pp_sptr

gr_make_fake_channel_decoder_pp(int input_vlen, int output_vlen)

{

  return gr_fake_channel_decoder_pp_sptr(new gr_fake_channel_decoder_pp(input_vlen,

                                                                        output_vlen));

}

gr_fake_channel_decoder_pp::gr_fake_channel_decoder_pp(int input_vlen, int output_vlen)

  : gr_sync_block("fake_channel_decoder_pp",

                  gr_make_io_signature(1, 1, input_vlen * sizeof(unsigned char)),

                  gr_make_io_signature(1, 1, output_vlen * sizeof(unsigned char))),

    d_input_vlen(input_vlen), d_output_vlen(output_vlen)

{

  if (input_vlen <= 0 || output_vlen <= 0 || output_vlen > input_vlen)

    throw std::invalid_argument("gr_fake_channel_decoder_pp");

}

gr_fake_channel_decoder_pp::~gr_fake_channel_decoder_pp()

{

}

int

gr_fake_channel_decoder_pp::work (int noutput_items,

                                  gr_vector_const_void_star &input_items,

                                  gr_vector_void_star &output_items)

{

  const unsigned char *in = (const unsigned char *) input_items[0];

  unsigned char *out = (unsigned char *) output_items[0];

  for (int i = 0; i < noutput_items; i++){

    memcpy(out, in, d_output_vlen);

    in += d_input_vlen;

    out += d_output_vlen;

  }

  return noutput_items;

}