mirror of
https://github.com/gnss-sdr/gnss-sdr
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286 lines
8.3 KiB
C++
286 lines
8.3 KiB
C++
/*!
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* \file unpack_2bit_samples_test.cc
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* \brief This file implements unit tests for the unpack_2bit_samples
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* custom block
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* \author Cillian O'Driscoll, 2015. cillian.odriscoll (at) gmail.com
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*
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#include "unpack_2bit_samples.h"
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#include <gnuradio/blocks/stream_to_vector.h>
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#include <gnuradio/top_block.h>
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#include <gtest/gtest.h>
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#include <cstddef>
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#ifdef GR_GREATER_38
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#include <gnuradio/blocks/vector_sink.h>
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#include <gnuradio/blocks/vector_source.h>
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#else
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#include <gnuradio/blocks/vector_sink_b.h>
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#include <gnuradio/blocks/vector_source_b.h>
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#include <gnuradio/blocks/vector_source_s.h>
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#endif
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std::vector<uint8_t> packData(std::vector<int8_t> const &raw_data,
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bool big_endian)
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{
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std::vector<uint8_t> packed_data(raw_data.size() / 4);
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int shift = (big_endian ? 6 : 0);
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unsigned int j = 0;
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for (signed char i : raw_data)
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{
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auto val = static_cast<unsigned>((i - 1) / 2 & 0x03);
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packed_data[j] |= val << shift;
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if (big_endian)
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{
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shift -= 2;
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if (shift < 0)
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{
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shift = 6;
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j++;
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}
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}
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else
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{
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shift += 2;
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if (shift > 6)
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{
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shift = 0;
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j++;
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}
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}
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}
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return packed_data;
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}
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TEST(Unpack2bitSamplesTest, CheckBigEndianByte)
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{
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bool big_endian_bytes = true;
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size_t item_size = 1;
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bool big_endian_items = false;
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std::vector<int8_t> raw_data = {-1, 3, 1, -1, -3, 1, 3, 1};
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std::vector<uint8_t> packed_data = packData(raw_data, big_endian_bytes);
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std::vector<uint8_t> unpacked_data;
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gr::top_block_sptr top_block = gr::make_top_block("Unpack2bitSamplesTest");
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gr::blocks::vector_source_b::sptr source =
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gr::blocks::vector_source_b::make(packed_data);
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auto unpacker =
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make_unpack_2bit_samples(big_endian_bytes,
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item_size,
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big_endian_items);
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gr::blocks::stream_to_vector::sptr stov =
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gr::blocks::stream_to_vector::make(item_size, raw_data.size());
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gr::blocks::vector_sink_b::sptr sink =
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gr::blocks::vector_sink_b::make(raw_data.size());
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top_block->connect(source, 0, unpacker, 0);
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top_block->connect(unpacker, 0, stov, 0);
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top_block->connect(stov, 0, sink, 0);
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top_block->run();
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top_block->stop();
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unpacked_data = sink->data();
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EXPECT_EQ(raw_data.size(), unpacked_data.size());
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for (size_t i = 0; i < raw_data.size(); ++i)
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{
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EXPECT_EQ(raw_data[i], static_cast<int8_t>(unpacked_data[i]));
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}
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}
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TEST(Unpack2bitSamplesTest, CheckLittleEndianByte)
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{
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bool big_endian_bytes = false;
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size_t item_size = 1;
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bool big_endian_items = false;
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std::vector<int8_t> raw_data = {-1, 3, 1, -1, -3, 1, 3, 1};
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std::vector<uint8_t> packed_data = packData(raw_data, big_endian_bytes);
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std::vector<uint8_t> unpacked_data;
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gr::top_block_sptr top_block = gr::make_top_block("Unpack2bitSamplesTest");
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gr::blocks::vector_source_b::sptr source =
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gr::blocks::vector_source_b::make(packed_data);
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auto unpacker =
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make_unpack_2bit_samples(big_endian_bytes,
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item_size,
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big_endian_items);
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gr::blocks::stream_to_vector::sptr stov =
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gr::blocks::stream_to_vector::make(item_size, raw_data.size());
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gr::blocks::vector_sink_b::sptr sink =
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gr::blocks::vector_sink_b::make(raw_data.size());
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top_block->connect(source, 0, unpacker, 0);
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top_block->connect(unpacker, 0, stov, 0);
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top_block->connect(stov, 0, sink, 0);
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top_block->run();
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top_block->stop();
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unpacked_data = sink->data();
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EXPECT_EQ(raw_data.size(), unpacked_data.size());
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for (size_t i = 0; i < raw_data.size(); ++i)
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{
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EXPECT_EQ(raw_data[i], static_cast<int8_t>(unpacked_data[i]));
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}
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}
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TEST(Unpack2bitSamplesTest, CheckBigEndianShortBigEndianByte)
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{
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bool big_endian_bytes = true;
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size_t item_size = 2;
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bool big_endian_items = true;
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std::vector<int8_t> raw_data = {-1, 3, 1, -1, -3, 1, 3, 1};
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std::vector<uint8_t> packed_data = packData(raw_data, big_endian_bytes);
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// change the order of each pair of bytes:
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for (size_t ii = 0; ii < packed_data.size(); ii += item_size)
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{
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unsigned int kk = ii + item_size - 1;
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unsigned int jj = ii;
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while (kk > jj)
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{
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uint8_t tmp = packed_data[jj];
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packed_data[jj] = packed_data[kk];
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packed_data[kk] = tmp;
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--kk;
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++jj;
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}
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}
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// Now create a new big endian buffer:
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std::vector<int16_t> packed_data_short(
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reinterpret_cast<int16_t *>(&packed_data[0]),
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reinterpret_cast<int16_t *>(&packed_data[0]) + packed_data.size() / item_size);
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std::vector<uint8_t> unpacked_data;
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gr::top_block_sptr top_block = gr::make_top_block("Unpack2bitSamplesTest");
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gr::blocks::vector_source_s::sptr source =
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gr::blocks::vector_source_s::make(packed_data_short);
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auto unpacker =
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make_unpack_2bit_samples(big_endian_bytes,
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item_size,
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big_endian_items);
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gr::blocks::stream_to_vector::sptr stov =
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gr::blocks::stream_to_vector::make(1, raw_data.size());
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gr::blocks::vector_sink_b::sptr sink =
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gr::blocks::vector_sink_b::make(raw_data.size());
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top_block->connect(source, 0, unpacker, 0);
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top_block->connect(unpacker, 0, stov, 0);
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top_block->connect(stov, 0, sink, 0);
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top_block->run();
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top_block->stop();
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unpacked_data = sink->data();
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EXPECT_EQ(raw_data.size(), unpacked_data.size());
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for (size_t i = 0; i < raw_data.size(); ++i)
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{
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EXPECT_EQ(raw_data[i], static_cast<int8_t>(unpacked_data[i]));
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}
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}
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TEST(Unpack2bitSamplesTest, CheckBigEndianShortLittleEndianByte)
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{
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bool big_endian_bytes = false;
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size_t item_size = 2;
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bool big_endian_items = true;
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std::vector<int8_t> raw_data = {-1, 3, 1, -1, -3, 1, 3, 1};
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std::vector<uint8_t> packed_data = packData(raw_data, big_endian_bytes);
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// change the order of each pair of bytes:
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for (size_t ii = 0; ii < packed_data.size(); ii += item_size)
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{
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unsigned int kk = ii + item_size - 1;
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unsigned int jj = ii;
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while (kk > jj)
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{
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uint8_t tmp = packed_data[jj];
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packed_data[jj] = packed_data[kk];
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packed_data[kk] = tmp;
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--kk;
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++jj;
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}
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}
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// Now create a new big endian buffer:
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std::vector<int16_t> packed_data_short(
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reinterpret_cast<int16_t *>(&packed_data[0]),
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reinterpret_cast<int16_t *>(&packed_data[0]) + packed_data.size() / item_size);
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std::vector<uint8_t> unpacked_data;
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gr::top_block_sptr top_block = gr::make_top_block("Unpack2bitSamplesTest");
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gr::blocks::vector_source_s::sptr source =
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gr::blocks::vector_source_s::make(packed_data_short);
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auto unpacker =
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make_unpack_2bit_samples(big_endian_bytes,
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item_size,
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big_endian_items);
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gr::blocks::stream_to_vector::sptr stov =
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gr::blocks::stream_to_vector::make(1, raw_data.size());
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gr::blocks::vector_sink_b::sptr sink =
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gr::blocks::vector_sink_b::make(raw_data.size());
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top_block->connect(source, 0, unpacker, 0);
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top_block->connect(unpacker, 0, stov, 0);
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top_block->connect(stov, 0, sink, 0);
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top_block->run();
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top_block->stop();
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unpacked_data = sink->data();
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EXPECT_EQ(raw_data.size(), unpacked_data.size());
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for (size_t i = 0; i < raw_data.size(); ++i)
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{
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EXPECT_EQ(raw_data[i], static_cast<int8_t>(unpacked_data[i]));
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}
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}
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