2010-10-28 00:45:15 +00:00
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/* -*- c++ -*- */
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/*
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* GNU Radio interface for Pavel Yazev's Project 25 IMBE Encoder/Decoder
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*
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* Copyright 2004 Free Software Foundation, Inc.
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* Copyright 2009 Pavel Yazev E-mail: pyazev@gmail.com
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2013-03-19 23:49:16 +00:00
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* Copyright 2009-2013 KA1RBI
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2010-10-28 00:45:15 +00:00
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with it; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* config.h is generated by configure. It contains the results
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* of probing for features, options etc. It should be the first
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* file included in your .cc file.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <vector>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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2010-10-28 02:13:00 +00:00
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#include <imbe_vocoder.h>
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2010-10-28 00:45:15 +00:00
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#include <repeater_vocoder.h>
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#include <op25_p25_frame.h>
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#include <op25_imbe_frame.h>
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#include <gr_io_signature.h>
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2013-03-19 23:49:16 +00:00
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/* bits to be preset to 1 for all transmitted frames */
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static const bool ldu1_preset[] = {
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0-35 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 36-71 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 72-107 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 108-143 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-179 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 180-215 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 216-251 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 252-287 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 288-323 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 324-359 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 360-395 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 396-431 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 432-467 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 468-503 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 504-539 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 540-575 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 576-611 */
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0,1,0,1,1,0,1,1,0,1,0,1,0,1,0,1,1,0,0,1,0,1,0,1,0,1,1,0,0,0,0,0,0,0,1,0, /* 612-647 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 648-683 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 684-719 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 720-755 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0, /* 756-791 */
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1,0,1,0,0,1,1,0,1,0,1,0,1,0,0,1,1,0,1,0,1,0,1,0,0,1,1,0,1,0,1,0,1,0,0,1, /* 792-827 */
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1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 828-863 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 864-899 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 900-935 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 936-971 */
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0,0,0,0,0,0,1,0,1,1,1,0,0,0,0,1,1,1,1,1,0,0,1,1,1,1,1,0,0,1,0,1,0,1,1,0, /* 972-1007 */
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0,1,0,0,1,0,0,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1008-1043 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1044-1079 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1080-1115 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1116-1151 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,1,1,0,1,1, /* 1152-1187 */
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1,1,1,1,0,0,1,1,1,1,0,0,0,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1188-1223 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1224-1259 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1260-1295 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1296-1331 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,1,1, /* 1332-1367 */
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1,1,1,0,1,1,0,1,1,1,0,0,1,0,1,1,0,1,0,0,0,1,1,0,1,1,1,0,0,1,0,0,0,0,0,0, /* 1368-1403 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1404-1439 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1440-1475 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1476-1511 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1512-1547 */
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1,0,1,0,1,0,0,1,0,0,0,0,1,0,1,0,1,0,1,0,1,0,0,1,0,0,0,0,1,0,0,0,0,0,1,0, /* 1548-1583 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1584-1619 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1620-1655 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1656-1691 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0 /* 1692-1727 */
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};
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static const bool ldu2_preset[] = {
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0-35 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 36-71 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 72-107 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 108-143 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-179 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 180-215 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 216-251 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 252-287 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 288-323 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 324-359 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 360-395 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 396-431 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 432-467 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 468-503 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 504-539 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 540-575 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 576-611 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 612-647 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 648-683 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 684-719 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 720-755 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 756-791 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 792-827 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 828-863 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 864-899 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 900-935 */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 936-971 */
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|
|
0,0,0,0,0,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 972-1007 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1008-1043 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1044-1079 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1080-1115 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1116-1151 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,1,1,1,0,1,0,0,0,1,0,1,1,0,1,0,0, /* 1152-1187 */
|
|
|
|
1,0,0,0,1,0,1,1,0,1,1,0,0,1,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1188-1223 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1224-1259 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1260-1295 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1296-1331 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,1,0,1,0,1,0,1,1, /* 1332-1367 */
|
|
|
|
1,1,1,1,0,1,0,0,1,1,1,1,0,0,0,1,1,1,1,1,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0, /* 1368-1403 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1404-1439 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1440-1475 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1476-1511 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1512-1547 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1548-1583 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1584-1619 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1620-1655 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1656-1691 */
|
|
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0, /* 1692-1727 */
|
|
|
|
};
|
|
|
|
|
|
|
|
static void clear_bits(bit_vector& v) {
|
|
|
|
for (size_t i=0; i<v.size(); i++) {
|
|
|
|
v[i]=0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-10-28 00:45:15 +00:00
|
|
|
/*
|
|
|
|
* Create a new instance of repeater_vocoder and return
|
|
|
|
* a boost shared_ptr. This is effectively the public constructor.
|
|
|
|
*/
|
|
|
|
repeater_vocoder_sptr
|
|
|
|
repeater_make_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag)
|
|
|
|
{
|
|
|
|
return repeater_vocoder_sptr (new repeater_vocoder (encode_flag, verbose_flag, stretch_amt, udp_host, udp_port, raw_vectors_flag));
|
|
|
|
}
|
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
|
|
// enc/dec udp operation
|
|
|
|
// dec no byte input; short output
|
|
|
|
// dec yes byte input; null output
|
|
|
|
// enc no short input; char output
|
|
|
|
// enc yes short input; null output
|
|
|
|
|
|
|
|
#define M_IN(encode_flag, udp_port) (1)
|
|
|
|
#define M_OUT(encode_flag, udp_port) ((udp_port) ? 0 : 1)
|
|
|
|
#define S_IN(encode_flag, udp_port) ((encode_flag) ? sizeof(int16_t) : sizeof(uint8_t))
|
|
|
|
#define S_OUT(encode_flag, udp_port) ((udp_port) ? 0 : ((encode_flag) ? sizeof(uint8_t) : sizeof(int16_t)))
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The private constructor
|
|
|
|
*/
|
|
|
|
repeater_vocoder::repeater_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag)
|
|
|
|
: gr_block ("vocoder",
|
|
|
|
gr_make_io_signature (M_IN(encode_flag, udp_port), M_IN(encode_flag, udp_port), S_IN(encode_flag, udp_port)),
|
|
|
|
gr_make_io_signature (M_OUT(encode_flag, udp_port), M_OUT(encode_flag, udp_port), S_OUT(encode_flag, udp_port))),
|
|
|
|
frame_cnt(0),
|
|
|
|
write_sock(0),
|
|
|
|
write_bufp(0),
|
|
|
|
peak_amplitude(0),
|
|
|
|
peak(0),
|
|
|
|
samp_ct(0),
|
|
|
|
rxbufp(0),
|
|
|
|
codeword_ct(0),
|
|
|
|
sampbuf_ct(0),
|
|
|
|
stretch_count(0),
|
|
|
|
save_l(0),
|
|
|
|
f_body(P25_VOICE_FRAME_SIZE)
|
|
|
|
{
|
|
|
|
opt_encode_flag = encode_flag;
|
|
|
|
opt_dump_raw_vectors = raw_vectors_flag;
|
|
|
|
opt_verbose = verbose_flag;
|
|
|
|
opt_udp_port = udp_port;
|
|
|
|
|
|
|
|
opt_stretch_amt = 0;
|
|
|
|
if (stretch_amt < 0) {
|
|
|
|
opt_stretch_sign = -1;
|
|
|
|
opt_stretch_amt = 0 - stretch_amt;
|
|
|
|
} else {
|
|
|
|
opt_stretch_sign = 1;
|
|
|
|
opt_stretch_amt = stretch_amt;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (opt_udp_port == 0)
|
|
|
|
if (encode_flag) {
|
|
|
|
// local output to gr source
|
|
|
|
// encoding: an LDU's worth of dibits
|
|
|
|
set_output_multiple(P25_VOICE_FRAME_SIZE >> 1);
|
|
|
|
} else {
|
|
|
|
// decoding: an LDU's worth of audio samples
|
|
|
|
// set_output_multiple(FRAME * nof_voice_codewords);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
// remote UDP output
|
|
|
|
init_sock(udp_host, opt_udp_port);
|
2013-03-19 23:49:16 +00:00
|
|
|
|
|
|
|
clear_bits(f_body);
|
2013-09-11 01:47:15 +00:00
|
|
|
|
|
|
|
const char *p = getenv("IMBE");
|
|
|
|
if (p && strcasecmp(p, "soft") == 0)
|
|
|
|
d_software_imbe_decoder = true;
|
|
|
|
else
|
|
|
|
d_software_imbe_decoder = false;
|
2010-10-28 00:45:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Our virtual destructor.
|
|
|
|
*/
|
|
|
|
repeater_vocoder::~repeater_vocoder ()
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static const int STATS_INTERVAL = 20;
|
|
|
|
static const int SAMP_INTERVAL = 8192;
|
|
|
|
|
|
|
|
void repeater_vocoder::append_imbe_codeword(bit_vector& frame_body, int16_t frame_vector[], unsigned int& codeword_ct)
|
|
|
|
{
|
|
|
|
voice_codeword cw(voice_codeword_sz);
|
|
|
|
uint8_t obuf[P25_VOICE_FRAME_SIZE/2];
|
|
|
|
// construct 144-bit codeword from 88 bits of parameters
|
|
|
|
imbe_header_encode(cw, frame_vector[0], frame_vector[1], frame_vector[2], frame_vector[3], frame_vector[4], frame_vector[5], frame_vector[6], frame_vector[7]);
|
|
|
|
|
|
|
|
// add codeword to voice data unit
|
|
|
|
imbe_interleave(frame_body, cw, codeword_ct);
|
|
|
|
|
|
|
|
// after the ninth and final codeword added, dispose of frame
|
|
|
|
if (++codeword_ct >= nof_voice_codewords) {
|
|
|
|
static const uint64_t hws[2] = { 0x293555ef2c653437LL, 0x293aba93bec26a2bLL };
|
2013-03-19 23:49:16 +00:00
|
|
|
int ldu_type = frame_cnt & 1; // set ldu_type = 0(LDU1) or 1(LDU2)
|
|
|
|
const bool* ldu_preset = (ldu_type == 0) ? ldu1_preset : ldu2_preset;
|
|
|
|
|
|
|
|
p25_setup_frame_header(frame_body, hws[ldu_type]);
|
|
|
|
for (size_t i = 0; i < frame_body.size(); i++) {
|
|
|
|
frame_body[i] = frame_body[i] | ldu_preset[i];
|
2010-10-28 00:45:15 +00:00
|
|
|
}
|
|
|
|
// finally, output the frame
|
|
|
|
if (opt_udp_port > 0) {
|
|
|
|
// pack the bits into bytes, MSB first
|
|
|
|
size_t obuf_ct = 0;
|
|
|
|
for (uint32_t i = 0; i < P25_VOICE_FRAME_SIZE; i += 8) {
|
|
|
|
uint8_t b =
|
|
|
|
(frame_body[i+0] << 7) +
|
|
|
|
(frame_body[i+1] << 6) +
|
|
|
|
(frame_body[i+2] << 5) +
|
|
|
|
(frame_body[i+3] << 4) +
|
|
|
|
(frame_body[i+4] << 3) +
|
|
|
|
(frame_body[i+5] << 2) +
|
|
|
|
(frame_body[i+6] << 1) +
|
|
|
|
(frame_body[i+7] );
|
|
|
|
obuf[obuf_ct++] = b;
|
|
|
|
}
|
|
|
|
sendto(write_sock, obuf, obuf_ct, 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
|
|
|
|
} else {
|
|
|
|
for (uint32_t i = 0; i < P25_VOICE_FRAME_SIZE; i += 2) {
|
|
|
|
uint8_t dibit =
|
|
|
|
(frame_body[i+0] << 1) +
|
|
|
|
(frame_body[i+1] );
|
|
|
|
output_queue.push_back(dibit);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
codeword_ct = 0;
|
|
|
|
frame_cnt++;
|
|
|
|
if (opt_verbose && (frame_cnt % STATS_INTERVAL) == 0) {
|
|
|
|
gettimeofday(&tv, &tz);
|
|
|
|
int s = tv.tv_sec - oldtv.tv_sec;
|
|
|
|
int us = tv.tv_usec - oldtv.tv_usec;
|
|
|
|
if (us < 0) {
|
|
|
|
us = us + 1000000;
|
|
|
|
s = s - 1;
|
|
|
|
}
|
|
|
|
float f = us;
|
|
|
|
f /= 1000000;
|
|
|
|
f += s;
|
|
|
|
fprintf (stderr, "time %f peak %5d\n", f / STATS_INTERVAL, peak_amplitude);
|
|
|
|
oldtv = tv;
|
|
|
|
}
|
2013-03-19 23:49:16 +00:00
|
|
|
clear_bits(f_body);
|
2010-10-28 00:45:15 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void repeater_vocoder::rxchar(char c)
|
|
|
|
{
|
|
|
|
int16_t snd[FRAME];
|
|
|
|
int16_t frame_vector[8];
|
|
|
|
int u[8];
|
|
|
|
|
|
|
|
if (c < ' ') {
|
|
|
|
if (c == '\n') {
|
|
|
|
rxbuf[rxbufp] = 0;
|
|
|
|
sscanf(rxbuf, "%x %x %x %x %x %x %x %x", &u[0], &u[1], &u[2], &u[3], &u[4], &u[5], &u[6], &u[7]);
|
|
|
|
rxbufp = 0;
|
|
|
|
// decode 88 bits, outputs 160 sound samples (8000 rate)
|
2013-09-11 01:47:15 +00:00
|
|
|
if (d_software_imbe_decoder) {
|
|
|
|
voice_codeword cw;
|
|
|
|
imbe_header_encode(cw, u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7]);
|
|
|
|
software_decoder.decode(cw);
|
|
|
|
audio_samples *samples = software_decoder.audio();
|
|
|
|
assert (samples->size() == FRAME);
|
|
|
|
for (int i=0; i < FRAME; i++) {
|
|
|
|
snd[i] = (int16_t)(samples->front() * 32768.0);
|
|
|
|
samples->pop_front();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
for (int i=0; i < 8; i++) {
|
|
|
|
frame_vector[i] = u[i];
|
|
|
|
}
|
|
|
|
/* TEST*/ frame_vector[7] >>= 1;
|
|
|
|
vocoder.imbe_decode(frame_vector, snd);
|
|
|
|
}
|
2010-10-28 00:45:15 +00:00
|
|
|
if (opt_udp_port > 0) {
|
2013-09-11 01:47:15 +00:00
|
|
|
sendto(write_sock, snd, FRAME * sizeof(int16_t), 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
|
2010-10-28 00:45:15 +00:00
|
|
|
} else {
|
|
|
|
// add generated samples to output queue
|
|
|
|
for (int i = 0; i < FRAME; i++) {
|
|
|
|
output_queue_decode.push_back(snd[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
rxbuf[rxbufp++] = c;
|
|
|
|
if (rxbufp >= RXBUF_MAX) {
|
|
|
|
rxbufp = RXBUF_MAX - 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void repeater_vocoder::compress_frame(int16_t snd[])
|
|
|
|
{
|
|
|
|
int16_t frame_vector[8];
|
|
|
|
|
|
|
|
// encode 160 audio samples into 88 bits (u0-u7)
|
|
|
|
vocoder.imbe_encode(frame_vector, snd);
|
|
|
|
|
|
|
|
// if dump option, dump u0-u7 to output
|
|
|
|
if (opt_dump_raw_vectors) {
|
|
|
|
char s[128];
|
|
|
|
sprintf(s, "%03x %03x %03x %03x %03x %03x %03x %03x\n", frame_vector[0], frame_vector[1], frame_vector[2], frame_vector[3], frame_vector[4], frame_vector[5], frame_vector[6], frame_vector[7]);
|
|
|
|
memcpy(&write_buf[write_bufp], s, strlen(s));
|
|
|
|
write_bufp += strlen(s);
|
|
|
|
if (write_bufp >= 288) {
|
|
|
|
sendto(write_sock, write_buf, 288, 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
|
|
|
|
write_bufp = 0;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
append_imbe_codeword(f_body, frame_vector, codeword_ct);
|
|
|
|
}
|
|
|
|
|
|
|
|
void repeater_vocoder::add_sample(int16_t samp)
|
|
|
|
{
|
|
|
|
// add one sample to 160-sample frame buffer and process if filled
|
|
|
|
sampbuf[sampbuf_ct++] = samp;
|
|
|
|
if (sampbuf_ct >= FRAME) {
|
|
|
|
compress_frame(sampbuf);
|
|
|
|
sampbuf_ct = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// track signal amplitudes
|
|
|
|
int16_t asamp = (samp < 0) ? 0 - samp : samp;
|
|
|
|
peak = (asamp > peak) ? asamp : peak;
|
|
|
|
if (++samp_ct >= SAMP_INTERVAL) {
|
|
|
|
peak_amplitude = peak;
|
|
|
|
peak = 0;
|
|
|
|
samp_ct = 0;
|
|
|
|
}
|
|
|
|
}
|
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void repeater_vocoder::compress_samp(int16_t samp)
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|
|
|
{
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|
|
|
// Apply sample rate slew to accomodate sound card rate discrepancy -
|
|
|
|
// workaround for USRP underrun problem occurring when sound card
|
|
|
|
// capture rate is slower than the correct rate
|
|
|
|
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|
|
|
// FIXME: autodetect proper value for opt_stretch_amt
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|
|
|
// perhaps by steering the LDU output rate to a 180.0 msec. rate
|
|
|
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|
|
stretch_count++;
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|
|
|
if (opt_stretch_amt != 0 && stretch_count >= opt_stretch_amt) {
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|
|
|
stretch_count = 0;
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|
|
|
if (opt_stretch_sign < 0)
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|
|
|
// spill this samp
|
|
|
|
return;
|
|
|
|
// repeat this samp
|
|
|
|
add_sample(samp);
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|
|
|
}
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|
|
add_sample(samp);
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|
|
}
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|
void repeater_vocoder::init_sock(char* udp_host, int udp_port)
|
|
|
|
{
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|
|
memset (&write_sock_addr, 0, sizeof(write_sock_addr));
|
|
|
|
write_sock = socket(PF_INET, SOCK_DGRAM, 17); // UDP socket
|
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|
|
if (write_sock < 0) {
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|
|
fprintf(stderr, "repeater_vocoder: socket: %d\n", errno);
|
|
|
|
write_sock = 0;
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|
|
|
return;
|
|
|
|
}
|
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|
|
if (!inet_aton(udp_host, &write_sock_addr.sin_addr)) {
|
|
|
|
fprintf(stderr, "repeater_vocoder: bad IP address\n");
|
|
|
|
close(write_sock);
|
|
|
|
write_sock = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
write_sock_addr.sin_family = AF_INET;
|
|
|
|
write_sock_addr.sin_port = htons(udp_port);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
repeater_vocoder::forecast(int nof_output_items, gr_vector_int &nof_input_items_reqd)
|
|
|
|
{
|
|
|
|
/* When encoding, this block consumes 8000 symbols/s and produces 4800
|
|
|
|
* samples/s. That's a sampling rate of 5/3 or 1.66667.
|
|
|
|
*
|
2013-02-26 20:42:05 +00:00
|
|
|
* When decoding, the block consumes one line of text per voice codeword.
|
|
|
|
* Each line of text is exactly 32 bytes. It outputs 160 samples for each
|
|
|
|
* codeword; the ratio is thus 32/160 = 0.2.
|
|
|
|
*
|
|
|
|
* Thanks to Matt Mills for catching a bug where this value wasn't set correctly
|
2010-10-28 00:45:15 +00:00
|
|
|
*/
|
|
|
|
const size_t nof_inputs = nof_input_items_reqd.size();
|
2013-02-26 20:42:05 +00:00
|
|
|
const int nof_samples_reqd = (opt_encode_flag) ? (1.66667 * nof_output_items) : (0.2 * nof_output_items);
|
2010-10-28 00:45:15 +00:00
|
|
|
std::fill(&nof_input_items_reqd[0], &nof_input_items_reqd[nof_inputs], nof_samples_reqd);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
repeater_vocoder::general_work_decode (int noutput_items,
|
|
|
|
gr_vector_int &ninput_items,
|
|
|
|
gr_vector_const_void_star &input_items,
|
|
|
|
gr_vector_void_star &output_items)
|
|
|
|
{
|
|
|
|
const char *in = (const char *) input_items[0];
|
|
|
|
|
|
|
|
for (int i = 0; i < ninput_items[0]; i++){
|
|
|
|
rxchar(in[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Tell runtime system how many input items we consumed on
|
|
|
|
// each input stream.
|
|
|
|
|
|
|
|
consume_each (ninput_items[0]);
|
|
|
|
|
|
|
|
uint16_t *out = reinterpret_cast<uint16_t*>(output_items[0]);
|
|
|
|
const int n = std::min(static_cast<int>(output_queue_decode.size()), noutput_items);
|
|
|
|
if(0 < n) {
|
|
|
|
copy(output_queue_decode.begin(), output_queue_decode.begin() + n, out);
|
|
|
|
output_queue_decode.erase(output_queue_decode.begin(), output_queue_decode.begin() + n);
|
|
|
|
}
|
|
|
|
// Tell runtime system how many output items we produced.
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
repeater_vocoder::general_work_encode (int noutput_items,
|
|
|
|
gr_vector_int &ninput_items,
|
|
|
|
gr_vector_const_void_star &input_items,
|
|
|
|
gr_vector_void_star &output_items)
|
|
|
|
{
|
|
|
|
const short *in = (const short *) input_items[0];
|
|
|
|
|
|
|
|
for (int i = 0; i < ninput_items[0]; i++){
|
|
|
|
compress_samp(in[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Tell runtime system how many input items we consumed on
|
|
|
|
// each input stream.
|
|
|
|
|
|
|
|
consume_each (ninput_items[0]);
|
|
|
|
|
|
|
|
if (opt_udp_port > 0) // in udp option, we are a gr sink only
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
uint8_t *out = reinterpret_cast<uint8_t*>(output_items[0]);
|
|
|
|
const int n = std::min(static_cast<int>(output_queue.size()), noutput_items);
|
|
|
|
if(0 < n) {
|
|
|
|
copy(output_queue.begin(), output_queue.begin() + n, out);
|
|
|
|
output_queue.erase(output_queue.begin(), output_queue.begin() + n);
|
|
|
|
}
|
|
|
|
// Tell runtime system how many output items we produced.
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
repeater_vocoder::general_work (int noutput_items,
|
|
|
|
gr_vector_int &ninput_items,
|
|
|
|
gr_vector_const_void_star &input_items,
|
|
|
|
gr_vector_void_star &output_items)
|
|
|
|
{
|
|
|
|
if (opt_encode_flag)
|
|
|
|
return general_work_encode(noutput_items, ninput_items, input_items, output_items);
|
|
|
|
else
|
|
|
|
return general_work_decode(noutput_items, ninput_items, input_items, output_items);
|
|
|
|
}
|