move vocoder block to repeater
git-svn-id: http://op25.osmocom.org/svn/trunk@225 65a5c917-d112-43f1-993d-58c26a4786be
This commit is contained in:
parent
28b52cdf88
commit
7f9cfb9e70
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@ -54,6 +54,8 @@ GR_OMNITHREAD
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CFLAGS="${CFLAGS} $PTHREAD_CFLAGS"
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CXXFLAGS="${CXXFLAGS} $PTHREAD_CFLAGS"
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CXXFLAGS="${CXXFLAGS} -I../../../imbe_vocoder/src/lib"
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if test "x$CXX_FOR_BUILD" = x
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then
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CXX_FOR_BUILD=${CXX}
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@ -66,12 +66,13 @@ _repeater_la_SOURCES = repeater\
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repeater_ctcss_squelch_ff.cc \
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repeater_squelch_base_ff.cc \
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repeater_gardner_costas_cc.cc \
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repeater_vocoder.cc \
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p25_framer.cc \
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bch.cc \
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rs.cc
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# magic flags
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_repeater_la_LDFLAGS = $(NO_UNDEFINED) -module -avoid-version
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_repeater_la_LDFLAGS = $(NO_UNDEFINED) -module -avoid-version -L../../../imbe_vocoder/src/lib/ -limbe_vocoder
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# link the library against some comon swig runtime code and the
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# c++ standard library
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@ -88,6 +89,7 @@ grinclude_HEADERS = \
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repeater_p25_frame_assembler.h \
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repeater_pipe.h \
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repeater_gardner_costas_cc.h \
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repeater_vocoder.h \
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repeater_ctcss_squelch_ff.h
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@ -15,6 +15,17 @@
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#include "repeater_gardner_costas_cc.h"
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#include "rs.h"
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#include <stdexcept>
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#include "repeater_vocoder.h"
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#include "typedef.h"
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#include "globals.h"
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#include "imbe.h"
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#include "dsp_sub.h"
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#include "basic_op.h"
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#include "math_sub.h"
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#include "encode.h"
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#include "decode.h"
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%}
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// ----------------------------------------------------------------
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@ -114,3 +125,15 @@ class repeater_gardner_costas_cc : public gr_sync_block
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private:
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repeater_gardner_costas_cc (float samples_per_symbol, float gain_mu, float gain_omega, float alpha, float beta, float max_freq, float min_freq);
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};
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// ----------------------------------------------------------------
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GR_SWIG_BLOCK_MAGIC(repeater,vocoder);
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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);
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class repeater_vocoder : public gr_block
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{
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private:
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repeater_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag);
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};
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@ -0,0 +1,396 @@
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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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* Copyright 2009, 2010 KA1RBI
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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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#include "typedef.h"
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#include "globals.h"
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#include "imbe.h"
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#include "dsp_sub.h"
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#include "basic_op.h"
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#include "math_sub.h"
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#include "encode.h"
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#include "decode.h"
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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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#include <imbe_vocoder.h>
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/*
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* Create a new instance of repeater_vocoder and return
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* a boost shared_ptr. This is effectively the public constructor.
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*/
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repeater_vocoder_sptr
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repeater_make_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag)
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{
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return repeater_vocoder_sptr (new repeater_vocoder (encode_flag, verbose_flag, stretch_amt, udp_host, udp_port, raw_vectors_flag));
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}
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//////////////////////////////////////////////////////////////
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// enc/dec udp operation
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// dec no byte input; short output
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// dec yes byte input; null output
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// enc no short input; char output
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// enc yes short input; null output
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#define M_IN(encode_flag, udp_port) (1)
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#define M_OUT(encode_flag, udp_port) ((udp_port) ? 0 : 1)
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#define S_IN(encode_flag, udp_port) ((encode_flag) ? sizeof(int16_t) : sizeof(uint8_t))
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#define S_OUT(encode_flag, udp_port) ((udp_port) ? 0 : ((encode_flag) ? sizeof(uint8_t) : sizeof(int16_t)))
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/*
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* The private constructor
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*/
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repeater_vocoder::repeater_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag)
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: gr_block ("vocoder",
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gr_make_io_signature (M_IN(encode_flag, udp_port), M_IN(encode_flag, udp_port), S_IN(encode_flag, udp_port)),
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gr_make_io_signature (M_OUT(encode_flag, udp_port), M_OUT(encode_flag, udp_port), S_OUT(encode_flag, udp_port))),
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frame_cnt(0),
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write_sock(0),
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write_bufp(0),
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peak_amplitude(0),
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peak(0),
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samp_ct(0),
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rxbufp(0),
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codeword_ct(0),
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sampbuf_ct(0),
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stretch_count(0),
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save_l(0),
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f_body(P25_VOICE_FRAME_SIZE)
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{
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opt_encode_flag = encode_flag;
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opt_dump_raw_vectors = raw_vectors_flag;
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opt_verbose = verbose_flag;
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opt_udp_port = udp_port;
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opt_stretch_amt = 0;
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if (stretch_amt < 0) {
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opt_stretch_sign = -1;
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opt_stretch_amt = 0 - stretch_amt;
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} else {
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opt_stretch_sign = 1;
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opt_stretch_amt = stretch_amt;
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}
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if (opt_udp_port == 0)
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if (encode_flag) {
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// local output to gr source
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// encoding: an LDU's worth of dibits
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set_output_multiple(P25_VOICE_FRAME_SIZE >> 1);
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} else {
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// decoding: an LDU's worth of audio samples
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// set_output_multiple(FRAME * nof_voice_codewords);
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}
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else
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// remote UDP output
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init_sock(udp_host, opt_udp_port);
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}
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/*
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* Our virtual destructor.
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*/
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repeater_vocoder::~repeater_vocoder ()
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{
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}
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static const int STATS_INTERVAL = 20;
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static const int SAMP_INTERVAL = 8192;
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void repeater_vocoder::append_imbe_codeword(bit_vector& frame_body, int16_t frame_vector[], unsigned int& codeword_ct)
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{
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voice_codeword cw(voice_codeword_sz);
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uint8_t obuf[P25_VOICE_FRAME_SIZE/2];
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// construct 144-bit codeword from 88 bits of parameters
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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]);
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// add codeword to voice data unit
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imbe_interleave(frame_body, cw, codeword_ct);
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// after the ninth and final codeword added, dispose of frame
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if (++codeword_ct >= nof_voice_codewords) {
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static const uint64_t hws[2] = { 0x293555ef2c653437LL, 0x293aba93bec26a2bLL };
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p25_setup_frame_header(frame_body, hws[frame_cnt & 1]);
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for (size_t i = 0; i < sizeof(imbe_ldu_ls_data_bits) / sizeof(imbe_ldu_ls_data_bits[0]); i++) {
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frame_body[imbe_ldu_ls_data_bits[i]] = 0;
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}
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// finally, output the frame
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if (opt_udp_port > 0) {
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// pack the bits into bytes, MSB first
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size_t obuf_ct = 0;
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for (uint32_t i = 0; i < P25_VOICE_FRAME_SIZE; i += 8) {
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uint8_t b =
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(frame_body[i+0] << 7) +
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(frame_body[i+1] << 6) +
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(frame_body[i+2] << 5) +
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(frame_body[i+3] << 4) +
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(frame_body[i+4] << 3) +
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(frame_body[i+5] << 2) +
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(frame_body[i+6] << 1) +
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(frame_body[i+7] );
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obuf[obuf_ct++] = b;
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}
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sendto(write_sock, obuf, obuf_ct, 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
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} else {
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for (uint32_t i = 0; i < P25_VOICE_FRAME_SIZE; i += 2) {
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uint8_t dibit =
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(frame_body[i+0] << 1) +
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(frame_body[i+1] );
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output_queue.push_back(dibit);
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}
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}
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codeword_ct = 0;
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frame_cnt++;
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if (opt_verbose && (frame_cnt % STATS_INTERVAL) == 0) {
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gettimeofday(&tv, &tz);
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int s = tv.tv_sec - oldtv.tv_sec;
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int us = tv.tv_usec - oldtv.tv_usec;
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if (us < 0) {
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us = us + 1000000;
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s = s - 1;
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}
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float f = us;
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f /= 1000000;
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f += s;
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fprintf (stderr, "time %f peak %5d\n", f / STATS_INTERVAL, peak_amplitude);
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oldtv = tv;
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}
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}
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}
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void repeater_vocoder::rxchar(char c)
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{
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int16_t snd[FRAME];
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int16_t frame_vector[8];
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int u[8];
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if (c < ' ') {
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if (c == '\n') {
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rxbuf[rxbufp] = 0;
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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]);
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rxbufp = 0;
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for (int i=0; i < 8; i++) {
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frame_vector[i] = u[i];
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}
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/* TEST*/ frame_vector[7] >>= 1;
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// decode 88 bits, outputs 160 sound samples (8000 rate)
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vocoder.imbe_decode(frame_vector, snd);
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if (opt_udp_port > 0) {
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sendto(write_sock, snd, FRAME * sizeof(uint16_t), 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
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} else {
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// add generated samples to output queue
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for (int i = 0; i < FRAME; i++) {
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output_queue_decode.push_back(snd[i]);
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}
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}
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}
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return;
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}
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rxbuf[rxbufp++] = c;
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if (rxbufp >= RXBUF_MAX) {
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rxbufp = RXBUF_MAX - 1;
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}
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}
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void repeater_vocoder::compress_frame(int16_t snd[])
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{
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int16_t frame_vector[8];
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// encode 160 audio samples into 88 bits (u0-u7)
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vocoder.imbe_encode(frame_vector, snd);
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// if dump option, dump u0-u7 to output
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if (opt_dump_raw_vectors) {
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char s[128];
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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]);
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memcpy(&write_buf[write_bufp], s, strlen(s));
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write_bufp += strlen(s);
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if (write_bufp >= 288) {
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sendto(write_sock, write_buf, 288, 0, (struct sockaddr*)&write_sock_addr, sizeof(write_sock_addr));
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write_bufp = 0;
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}
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return;
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}
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append_imbe_codeword(f_body, frame_vector, codeword_ct);
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}
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void repeater_vocoder::add_sample(int16_t samp)
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{
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// add one sample to 160-sample frame buffer and process if filled
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sampbuf[sampbuf_ct++] = samp;
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if (sampbuf_ct >= FRAME) {
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compress_frame(sampbuf);
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sampbuf_ct = 0;
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}
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// track signal amplitudes
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int16_t asamp = (samp < 0) ? 0 - samp : samp;
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peak = (asamp > peak) ? asamp : peak;
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if (++samp_ct >= SAMP_INTERVAL) {
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peak_amplitude = peak;
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peak = 0;
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samp_ct = 0;
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}
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}
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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 -
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// workaround for USRP underrun problem occurring when sound card
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// 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
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return;
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// repeat this samp
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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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{
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memset (&write_sock_addr, 0, sizeof(write_sock_addr));
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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);
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write_sock = 0;
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return;
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}
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if (!inet_aton(udp_host, &write_sock_addr.sin_addr)) {
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fprintf(stderr, "repeater_vocoder: bad IP address\n");
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close(write_sock);
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write_sock = 0;
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return;
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}
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write_sock_addr.sin_family = AF_INET;
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write_sock_addr.sin_port = htons(udp_port);
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}
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void
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repeater_vocoder::forecast(int nof_output_items, gr_vector_int &nof_input_items_reqd)
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{
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/* When encoding, this block consumes 8000 symbols/s and produces 4800
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* samples/s. That's a sampling rate of 5/3 or 1.66667.
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*
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* When decoding, this block consumes 4800 symbols/s and produces 8000
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* samples/s. That's a sampling rate of 3/5 or 0.6.
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*/
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const size_t nof_inputs = nof_input_items_reqd.size();
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const int nof_samples_reqd = (opt_encode_flag) ? (1.66667 * nof_output_items) : (0.6 * nof_output_items);
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std::fill(&nof_input_items_reqd[0], &nof_input_items_reqd[nof_inputs], nof_samples_reqd);
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}
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int
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repeater_vocoder::general_work_decode (int noutput_items,
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gr_vector_int &ninput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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const char *in = (const char *) input_items[0];
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for (int i = 0; i < ninput_items[0]; i++){
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rxchar(in[i]);
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}
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// Tell runtime system how many input items we consumed on
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// each input stream.
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consume_each (ninput_items[0]);
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uint16_t *out = reinterpret_cast<uint16_t*>(output_items[0]);
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const int n = std::min(static_cast<int>(output_queue_decode.size()), noutput_items);
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if(0 < n) {
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copy(output_queue_decode.begin(), output_queue_decode.begin() + n, out);
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output_queue_decode.erase(output_queue_decode.begin(), output_queue_decode.begin() + n);
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}
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// Tell runtime system how many output items we produced.
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return n;
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}
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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);
|
||||
}
|
|
@ -0,0 +1,137 @@
|
|||
/* -*- c++ -*- */
|
||||
/*
|
||||
* Copyright 2004 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.
|
||||
*/
|
||||
#ifndef INCLUDED_REPEATER_VOCODER_H
|
||||
#define INCLUDED_REPEATER_VOCODER_H
|
||||
|
||||
#include <gr_block.h>
|
||||
#include <sys/time.h>
|
||||
#include <netinet/in.h>
|
||||
#include <stdint.h>
|
||||
#include <vector>
|
||||
#include <deque>
|
||||
typedef std::vector<bool> bit_vector;
|
||||
|
||||
#include <imbe_vocoder.h>
|
||||
|
||||
class repeater_vocoder;
|
||||
|
||||
/*
|
||||
* We use boost::shared_ptr's instead of raw pointers for all access
|
||||
* to gr_blocks (and many other data structures). The shared_ptr gets
|
||||
* us transparent reference counting, which greatly simplifies storage
|
||||
* management issues. This is especially helpful in our hybrid
|
||||
* C++ / Python system.
|
||||
*
|
||||
* See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
|
||||
*
|
||||
* As a convention, the _sptr suffix indicates a boost::shared_ptr
|
||||
*/
|
||||
typedef boost::shared_ptr<repeater_vocoder> repeater_vocoder_sptr;
|
||||
|
||||
/*!
|
||||
* \brief Return a shared_ptr to a new instance of repeater_vocoder.
|
||||
*
|
||||
* To avoid accidental use of raw pointers, repeater_vocoder's
|
||||
* constructor is private. repeater_make_vocoder is the public
|
||||
* interface for creating new instances.
|
||||
*/
|
||||
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);
|
||||
|
||||
/*!
|
||||
* \brief
|
||||
* \ingroup block
|
||||
*
|
||||
*/
|
||||
class repeater_vocoder : public gr_block
|
||||
{
|
||||
private:
|
||||
// The friend declaration allows repeater_make_vocoder to
|
||||
// access the private constructor.
|
||||
|
||||
friend 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);
|
||||
|
||||
repeater_vocoder (bool encode_flag, bool verbose_flag, int stretch_amt, char* udp_host, int udp_port, bool raw_vectors_flag); // private constructor
|
||||
|
||||
public:
|
||||
~repeater_vocoder (); // public destructor
|
||||
|
||||
void forecast(int nof_output_items, gr_vector_int &nof_input_items_reqd);
|
||||
|
||||
// Where all the action really happens
|
||||
|
||||
int general_work_decode (int noutput_items,
|
||||
gr_vector_int &ninput_items,
|
||||
gr_vector_const_void_star &input_items,
|
||||
gr_vector_void_star &output_items);
|
||||
int general_work_encode (int noutput_items,
|
||||
gr_vector_int &ninput_items,
|
||||
gr_vector_const_void_star &input_items,
|
||||
gr_vector_void_star &output_items);
|
||||
int general_work (int noutput_items,
|
||||
gr_vector_int &ninput_items,
|
||||
gr_vector_const_void_star &input_items,
|
||||
gr_vector_void_star &output_items);
|
||||
|
||||
private:
|
||||
static const int RXBUF_MAX = 80;
|
||||
|
||||
/* data items */
|
||||
int frame_cnt ;
|
||||
int write_sock;
|
||||
struct sockaddr_in write_sock_addr;
|
||||
int write_bufp;
|
||||
char write_buf[512];
|
||||
struct timeval tv;
|
||||
struct timezone tz;
|
||||
struct timeval oldtv;
|
||||
int peak_amplitude;
|
||||
int peak;
|
||||
int samp_ct;
|
||||
char rxbuf[RXBUF_MAX];
|
||||
int rxbufp ;
|
||||
unsigned int codeword_ct ;
|
||||
int16_t sampbuf[FRAME];
|
||||
size_t sampbuf_ct ;
|
||||
int stretch_count ;
|
||||
uint8_t save_l;
|
||||
bit_vector f_body;
|
||||
imbe_vocoder vocoder;
|
||||
|
||||
std::deque<uint8_t> output_queue;
|
||||
std::deque<uint16_t> output_queue_decode;
|
||||
|
||||
bool opt_encode_flag;
|
||||
bool opt_dump_raw_vectors;
|
||||
bool opt_verbose;
|
||||
int opt_stretch_amt;
|
||||
int opt_stretch_sign;
|
||||
int opt_udp_port;
|
||||
/* local methods */
|
||||
void append_imbe_codeword(bit_vector& frame_body, int16_t frame_vector[], unsigned int& codeword_ct);
|
||||
void rxchar(char c);
|
||||
void compress_frame(int16_t snd[]);
|
||||
void add_sample(int16_t samp);
|
||||
void compress_samp(int16_t samp);
|
||||
void init_sock(char* udp_host, int udp_port);
|
||||
};
|
||||
|
||||
#endif /* INCLUDED_REPEATER_VOCODER_H */
|
Reference in New Issue