GNU Radio's SATELLITES Package
varlen_packet_tagger_impl.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2017 Glenn Richardson <glenn@spacequest.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3, or (at your option)
8 * any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>
17 */
18
19#ifndef INCLUDED_VARLEN_PACKET_TAGGER_IMPL_H
20#define INCLUDED_VARLEN_PACKET_TAGGER_IMPL_H
21
23#include <pmt/pmt.h>
24
25
26namespace gr {
27 namespace satellites {
30 {
31 private:
32 int d_header_length; // bit size of packet length field
33 int d_mtu; // maximum packet size in bits
34 bool d_use_golay; // decode golay packet length
35 endianness_t d_endianness; // header endianness
36
37 pmt::pmt_t d_sync_tag; // marker tag on input for start of packet
38 pmt::pmt_t d_packet_tag; // packet_len tag for output stream
39
40 bool d_have_sync; // interal state
41 int d_ninput_items_required; // forecast
42
43 int bits2len(const unsigned char *in);
44
45 public:
46 varlen_packet_tagger_impl(const std::string &sync_key,
47 const std::string &packet_key,
48 int length_field_size,
49 int max_packet_size,
50 endianness_t endianness,
51 bool use_golay);
53
54 void forecast(int noutput_items, gr_vector_int &ninput_itens_required);
55
56 int general_work(int noutput_items,
57 gr_vector_int &ninput_items,
58 gr_vector_const_void_star &input_items,
59 gr_vector_void_star &output_items);
60 };
61
62 } // namespace satellites
63} // namespace gr
64
65#endif
66
Definition varlen_packet_tagger_impl.h:30
void forecast(int noutput_items, gr_vector_int &ninput_itens_required)
int general_work(int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
varlen_packet_tagger_impl(const std::string &sync_key, const std::string &packet_key, int length_field_size, int max_packet_size, endianness_t endianness, bool use_golay)
Examine input stream for sync tags and extract packet length.
Definition varlen_packet_tagger.h:44
Definition ao40_deinterleaver.h:25