143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2004 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio 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 2, or (at your option)
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* any later version.
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*
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* GNU Radio 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 GNU Radio; 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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#ifndef INCLUDED_REPEATER_VOCODER_H
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#define INCLUDED_REPEATER_VOCODER_H
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#include <gr_block.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#include <stdint.h>
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#include <vector>
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#include <deque>
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typedef std::vector<bool> bit_vector;
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#include <imbe_vocoder.h>
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#include <imbe_decoder.h>
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#include <software_imbe_decoder.h>
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class repeater_vocoder;
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/*
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* We use boost::shared_ptr's instead of raw pointers for all access
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* to gr_blocks (and many other data structures). The shared_ptr gets
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* us transparent reference counting, which greatly simplifies storage
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* management issues. This is especially helpful in our hybrid
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* C++ / Python system.
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*
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* See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
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*
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* As a convention, the _sptr suffix indicates a boost::shared_ptr
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*/
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typedef boost::shared_ptr<repeater_vocoder> repeater_vocoder_sptr;
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/*!
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* \brief Return a shared_ptr to a new instance of repeater_vocoder.
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*
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* To avoid accidental use of raw pointers, repeater_vocoder's
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* constructor is private. repeater_make_vocoder is the public
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* interface for creating new instances.
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*/
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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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/*!
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* \brief
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* \ingroup block
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*
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*/
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class repeater_vocoder : public gr_block
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{
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private:
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// The friend declaration allows repeater_make_vocoder to
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// access the private constructor.
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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);
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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); // private constructor
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public:
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~repeater_vocoder (); // public destructor
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void forecast(int nof_output_items, gr_vector_int &nof_input_items_reqd);
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// Where all the action really happens
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int 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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int general_work_encode (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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int general_work (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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private:
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static const int RXBUF_MAX = 80;
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/* data items */
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int frame_cnt ;
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int write_sock;
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struct sockaddr_in write_sock_addr;
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int write_bufp;
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char write_buf[512];
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struct timeval tv;
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struct timezone tz;
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struct timeval oldtv;
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int peak_amplitude;
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int peak;
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int samp_ct;
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char rxbuf[RXBUF_MAX];
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int rxbufp ;
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unsigned int codeword_ct ;
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int16_t sampbuf[FRAME];
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size_t sampbuf_ct ;
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int stretch_count ;
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uint8_t save_l;
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bit_vector f_body;
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imbe_vocoder vocoder;
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software_imbe_decoder software_decoder;
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bool d_software_imbe_decoder;
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std::deque<uint8_t> output_queue;
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std::deque<uint16_t> output_queue_decode;
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bool opt_encode_flag;
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bool opt_dump_raw_vectors;
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bool opt_verbose;
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int opt_stretch_amt;
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int opt_stretch_sign;
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int opt_udp_port;
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/* local methods */
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void append_imbe_codeword(bit_vector& frame_body, int16_t frame_vector[], unsigned int& codeword_ct);
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void rxchar(char c);
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void compress_frame(int16_t snd[]);
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void add_sample(int16_t samp);
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void compress_samp(int16_t samp);
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void init_sock(char* udp_host, int udp_port);
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};
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#endif /* INCLUDED_REPEATER_VOCODER_H */
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