GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
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unpacked_to_packed.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2006,2013,2018 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23
24#ifndef UNPACKED_TO_PACKED_H
25#define UNPACKED_TO_PACKED_H
26
27#include <gnuradio/block.h>
28#include <gnuradio/blocks/api.h>
29#include <gnuradio/endianness.h>
30#include <cstdint>
31
32namespace gr {
33namespace blocks {
34
35/*!
36 * \brief Convert a stream of unpacked bytes or shorts into a stream of packed bytes or
37 * shorts. \ingroup byte_operators_blk
38 *
39 * \details
40 * input: stream of T; output: stream of T
41 *
42 * This is the inverse of gr::blocks::packed_to_unpacked_XX.
43 *
44 * The low \p bits_per_chunk bits are extracted from each input
45 * byte or short. These bits are then packed densely into the
46 * output bytes or shorts, such that all 8 or 16 bits of the
47 * output bytes or shorts are filled with valid input bits. The
48 * right thing is done if bits_per_chunk is not a power of two.
49 *
50 * The combination of gr::blocks::packed_to_unpacked_XX followed by
51 * gr_chunks_to_symbols_Xf or gr_chunks_to_symbols_Xc handles the
52 * general case of mapping from a stream of bytes or shorts into
53 * arbitrary float or complex symbols.
54 *
55 * \sa gr::blocks::packed_to_unpacked_bb, gr::blocks::unpacked_to_packed_bb,
56 * \sa gr::blocks::packed_to_unpacked_ss, gr::blocks::unpacked_to_packed_ss,
57 * \sa gr::blocks::chunks_to_symbols_bf, gr::blocks::chunks_to_symbols_bc.
58 * \sa gr::blocks::chunks_to_symbols_sf, gr::blocks::chunks_to_symbols_sc.
59 */
60template <class T>
61class BLOCKS_API unpacked_to_packed : virtual public block
62{
63public:
64 // gr::blocks::unpacked_to_packed::sptr
65 typedef boost::shared_ptr<unpacked_to_packed<T>> sptr;
66
67 static sptr make(unsigned int bits_per_chunk, endianness_t endianness);
68};
69
73} /* namespace blocks */
74} /* namespace gr */
75
76#endif /* UNPACKED_TO_PACKED_H */
The abstract base class for all 'terminal' processing blocks.
Definition block.h:72
Convert a stream of unpacked bytes or shorts into a stream of packed bytes or shorts.
Definition unpacked_to_packed.h:62
static sptr make(unsigned int bits_per_chunk, endianness_t endianness)
boost::shared_ptr< unpacked_to_packed< T > > sptr
Definition unpacked_to_packed.h:65
#define BLOCKS_API
Definition gr-blocks/include/gnuradio/blocks/api.h:30
unpacked_to_packed< std::uint8_t > unpacked_to_packed_bb
Definition unpacked_to_packed.h:70
unpacked_to_packed< std::int32_t > unpacked_to_packed_ii
Definition unpacked_to_packed.h:72
unpacked_to_packed< std::int16_t > unpacked_to_packed_ss
Definition unpacked_to_packed.h:71
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46
endianness_t
Definition endianness.h:28