diff options
Diffstat (limited to 'gr-error-correcting-codes/src/lib/libecc/encoder.cc')
| -rw-r--r-- | gr-error-correcting-codes/src/lib/libecc/encoder.cc | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/gr-error-correcting-codes/src/lib/libecc/encoder.cc b/gr-error-correcting-codes/src/lib/libecc/encoder.cc deleted file mode 100644 index 336698025..000000000 --- a/gr-error-correcting-codes/src/lib/libecc/encoder.cc +++ /dev/null @@ -1,225 +0,0 @@ -/* -*- 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., 51 Franklin Street, - * Boston, MA 02110-1301, 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 code_input_ptr in_buf, - code_output_ptr out_buf, - size_t n_bits_to_output) -{ - if (in_buf == 0) { - std::cerr << "encoder::encode{output}: Error: " - "input buffer is NULL.\n"; - assert (0); - } - if (out_buf == 0) { - std::cerr << "encoder::encode{output}: Error: " - "output buffer is NULL.\n"; - assert (0); - } - if (n_bits_to_output == 0) { - std::cerr << "encoder::encode{output}: Warning: " - "no output bits requested.\n"; - return (0); - } - - // set the class-internal number of input bits and - // output bits left to encode - - d_in_buf = in_buf; - d_out_buf = out_buf; - - // check that there are enough output buffer items - - if (d_out_buf->n_items_left() < n_bits_to_output) { - std::cerr << "encoder::encode{output}: Warning: " - "output buffer size (" << d_out_buf->n_items_left() << - ") is less than the desired number of output items (" << - n_bits_to_output << ") ... using lower number.\n"; - n_bits_to_output = d_out_buf->n_items_left(); - } - - // check that there are enough input buffer items - - size_t n_bits_to_input = compute_n_input_bits (n_bits_to_output); - - if (d_in_buf->n_items_left() < n_bits_to_input) { - std::cerr << "encoder::encode{output}: Warning: input buffer size (" << - d_in_buf->n_items_left() << ") is less than the computed number " - "of required input items (" << n_bits_to_input << - ") ... using lower number.\n"; - n_bits_to_input = d_in_buf->n_items_left(); - n_bits_to_output = compute_n_output_bits (n_bits_to_input); - } - - // set the correct number of I/O bits - - d_n_bits_to_input = n_bits_to_input; - d_n_bits_to_output = n_bits_to_output; - - if (DO_PRINT_DEBUG) { - std::cout << - "Before Encoding{output}:\n" - " # output bits = " << d_n_bits_to_output << "\n" - " # input bits = " << d_n_bits_to_input << "\n" - " # output bits used = " << d_out_buf->n_items_used() << "\n" - " # input bits used = " << d_in_buf->n_items_used() << "\n"; - } - - // call the private encode function - - encode_private (); - - if (DO_PRINT_DEBUG) { - std::cout << - "After Encoding{output}:\n" - " # output bits = " << d_n_bits_to_output << "\n" - " # input bits = " << d_n_bits_to_input << "\n" - " # output bits used = " << d_out_buf->n_items_used() << "\n" - " # input bits used = " << d_in_buf->n_items_used() << "\n"; - } - - // clear these buffers, just in case - - d_in_buf = 0; - d_out_buf = 0; - - // return the actual number of input bits used - - return (n_bits_to_input - d_n_bits_to_input); -} - -/* - * 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 code_input_ptr in_buf, - size_t n_bits_to_input, - code_output_ptr out_buf) -{ - if (in_buf == 0) { - std::cerr << "encoder::encode{input}: Error: input buffer is NULL.\n"; - assert (0); - } - if (out_buf == 0) { - std::cerr << "encoder::encode{input}: Error: output buffer is NULL.\n"; - assert (0); - } - if (n_bits_to_input == 0) { - std::cerr << "encoder::encode{input}: Warning: no input bits requested.\n"; - return (0); - } - - // set the class-internal number of input and - // output bits left to encode - - d_in_buf = in_buf; - d_out_buf = out_buf; - - // check that there are enough input buffer items - - if (d_in_buf->n_items_left() < n_bits_to_input) { - std::cerr << "encoder::encode{input}: Warning: input buffer size (" << - d_in_buf->n_items_left() << ") is less than the desired number " - "of input items (" << n_bits_to_input << - ") ... using lower number.\n"; - n_bits_to_input = d_in_buf->n_items_left(); - } - - // check that there are enough output buffer items - - size_t n_bits_to_output = compute_n_output_bits (n_bits_to_input); - - if (d_out_buf->n_items_left() < n_bits_to_output) { - std::cerr << "encoder::encode{input}: Warning: output buffer size (" << - d_out_buf->n_items_left() << ") is less than the computed number " - "of required output items (" << n_bits_to_output << - ") ... using lower number.\n"; - n_bits_to_output = d_out_buf->n_items_left(); - n_bits_to_input = compute_n_input_bits (n_bits_to_output); - } - - // set the correct number of I/O bits - - d_n_bits_to_input = n_bits_to_input; - d_n_bits_to_output = n_bits_to_output; - - if (DO_PRINT_DEBUG) { - std::cout << - "Before Encoding{input}:\n" - " # output bits = " << d_n_bits_to_output << "\n" - " # input bits = " << d_n_bits_to_input << "\n" - " # output bits used = " << d_out_buf->n_items_used() << "\n" - " # input bits used = " << d_in_buf->n_items_used() << "\n"; - } - - // call the private encode function - - encode_private (); - - if (DO_PRINT_DEBUG) { - std::cout << - "After Encoding{input}:\n" - " # output bits = " << d_n_bits_to_output << "\n" - " # input bits = " << d_n_bits_to_input << "\n" - " # output bits used = " << d_out_buf->n_items_used() << "\n" - " # input bits used = " << d_in_buf->n_items_used() << "\n"; - } - - // clear these buffers, just in case - - d_in_buf = 0; - d_out_buf = 0; - - // return the actual number of output bits written - - return (n_bits_to_output - d_n_bits_to_output); -} |