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/* -*- c++ -*- */
/*
* Copyright 2006 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <encoder.h>
#include <iostream>
#define DO_PRINT_DEBUG 0
/*
* encode a certain number of output bits
*
* the 'in_buf' and 'out_buf' must have enough memory to handle the
* number of input and output bits; no error checking is done!
*
* n_bits_to_output: the number of bits per output stream to encode
*
* returns the actual number of bits used per input stream
*/
size_t
encoder::encode
(const char** in_buf,
char** out_buf,
size_t n_bits_to_output)
{
if (DO_PRINT_DEBUG) {
std::cout << "encode{out}(): Starting:";
}
// set the class-internal number of input bits and
// output bits left to encode
size_t saved_n_input_bits;
saved_n_input_bits = d_n_input_bits_left =
compute_n_input_bits (n_bits_to_output);
d_n_output_bits_left = n_bits_to_output;
if (DO_PRINT_DEBUG) {
std::cout <<
"# output bits provided = " << d_n_output_bits_left << "\n"
"# input bits computed = " << d_n_input_bits_left << "\n";
}
// call the private encode function
encode_private (in_buf, out_buf);
if (DO_PRINT_DEBUG) {
std::cout <<
"n_input_bits_used = " <<
(saved_n_input_bits - d_n_input_bits_left) << "\n"
"n_output_bits_used = " <<
(n_bits_to_output - d_n_output_bits_left) << '\n';
}
// return the actual number of input bits used
return (saved_n_input_bits - d_n_input_bits_left);
}
/*
* encode a certain number of input bits
*
* the 'in_buf' and 'out_buf' must have enough memory to handle the
* number of input and output bits; no error checking is done!
*
* n_bits_to_input: the number of bits per input stream to encode
*
* returns the actual number of bits written per output stream
*/
size_t
encoder::encode
(const char** in_buf,
size_t n_bits_to_input,
char** out_buf)
{
// set the class-internal number of input and
// output bits left to encode
size_t saved_n_output_bits;
saved_n_output_bits = d_n_output_bits_left =
compute_n_output_bits (n_bits_to_input);
d_n_input_bits_left = n_bits_to_input;
// call the private encode function
encode_private (in_buf, out_buf);
if (DO_PRINT_DEBUG) {
std::cout << "n_input_bits_used = " <<
(n_bits_to_input - d_n_input_bits_left) << '\n';
std::cout << "n_output_bits_used = " <<
(saved_n_output_bits - d_n_output_bits_left) << '\n';
}
// return the actual number of output bits written
return (saved_n_output_bits - d_n_output_bits_left);
}
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