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//
// Copyright 2011-2011 Ettus Research LLC
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <uhd/convert.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/foreach.hpp>
#include <boost/cstdint.hpp>
#include <complex>
#include <vector>
#include <cstdlib>
#include <iostream>
using namespace uhd;
//typedefs for complex types
typedef std::complex<boost::int16_t> sc16_t;
typedef std::complex<float> fc32_t;
#define MY_CHECK_CLOSE(a, b, f) if ((std::abs(a) > (f) and std::abs(b) > (f))) \
BOOST_CHECK_CLOSE_FRACTION(a, b, f)
/***********************************************************************
* Loopback runner:
* convert input buffer into intermediate buffer
* convert intermediate buffer into output buffer
**********************************************************************/
template <typename Range> static void loopback(
size_t nsamps,
const io_type_t &io_type,
const otw_type_t &otw_type,
const Range &input,
Range &output
){
//item32 is largest device type
std::vector<boost::uint32_t> interm(nsamps);
convert::input_type input0(1, &input[0]), input1(1, &interm[0]);
convert::output_type output0(1, &interm[0]), output1(1, &output[0]);
//convert to intermediate type
convert::io_type_to_otw_type(
io_type, otw_type, input0, output0, nsamps
);
//convert back to host type
convert::otw_type_to_io_type(
io_type, otw_type, input1, output1, nsamps
);
}
/***********************************************************************
* Test short conversion
**********************************************************************/
static void test_convert_types_sc16(
size_t nsamps,
const io_type_t &io_type,
const otw_type_t &otw_type
){
//fill the input samples
std::vector<sc16_t> input(nsamps), output(nsamps);
BOOST_FOREACH(sc16_t &in, input) in = sc16_t(
std::rand()-(RAND_MAX/2),
std::rand()-(RAND_MAX/2)
);
//run the loopback and test
loopback(nsamps, io_type, otw_type, input, output);
BOOST_CHECK_EQUAL_COLLECTIONS(input.begin(), input.end(), output.begin(), output.end());
}
BOOST_AUTO_TEST_CASE(test_convert_types_be_sc16){
io_type_t io_type(io_type_t::COMPLEX_INT16);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_BIG_ENDIAN;
otw_type.width = 16;
//try various lengths to test edge cases
for (size_t nsamps = 1; nsamps < 16; nsamps++){
test_convert_types_sc16(nsamps, io_type, otw_type);
}
}
BOOST_AUTO_TEST_CASE(test_convert_types_le_sc16){
io_type_t io_type(io_type_t::COMPLEX_INT16);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
otw_type.width = 16;
//try various lengths to test edge cases
for (size_t nsamps = 1; nsamps < 16; nsamps++){
test_convert_types_sc16(nsamps, io_type, otw_type);
}
}
/***********************************************************************
* Test float conversion
**********************************************************************/
static void test_convert_types_fc32(
size_t nsamps,
const io_type_t &io_type,
const otw_type_t &otw_type
){
//fill the input samples
std::vector<fc32_t> input(nsamps), output(nsamps);
BOOST_FOREACH(fc32_t &in, input) in = fc32_t(
(std::rand()/float(RAND_MAX/2)) - 1,
(std::rand()/float(RAND_MAX/2)) - 1
);
//run the loopback and test
loopback(nsamps, io_type, otw_type, input, output);
for (size_t i = 0; i < nsamps; i++){
MY_CHECK_CLOSE(input[i].real(), output[i].real(), float(0.01));
MY_CHECK_CLOSE(input[i].imag(), output[i].imag(), float(0.01));
}
}
BOOST_AUTO_TEST_CASE(test_convert_types_be_fc32){
io_type_t io_type(io_type_t::COMPLEX_FLOAT32);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_BIG_ENDIAN;
otw_type.width = 16;
//try various lengths to test edge cases
for (size_t nsamps = 1; nsamps < 16; nsamps++){
test_convert_types_fc32(nsamps, io_type, otw_type);
}
}
BOOST_AUTO_TEST_CASE(test_convert_types_le_fc32){
io_type_t io_type(io_type_t::COMPLEX_FLOAT32);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
otw_type.width = 16;
//try various lengths to test edge cases
for (size_t nsamps = 1; nsamps < 16; nsamps++){
test_convert_types_fc32(nsamps, io_type, otw_type);
}
}
/***********************************************************************
* Test float to short conversion loopback
**********************************************************************/
BOOST_AUTO_TEST_CASE(test_convert_types_fc32_to_sc16){
io_type_t io_type_in(io_type_t::COMPLEX_FLOAT32);
io_type_t io_type_out(io_type_t::COMPLEX_INT16);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_NATIVE;
otw_type.width = 16;
const size_t nsamps = 13;
std::vector<fc32_t> input(nsamps);
BOOST_FOREACH(fc32_t &in, input) in = fc32_t(
(std::rand()/float(RAND_MAX/2)) - 1,
(std::rand()/float(RAND_MAX/2)) - 1
);
std::vector<boost::uint32_t> interm(nsamps);
std::vector<sc16_t> output(nsamps);
convert::input_type input0(1, &input[0]), input1(1, &interm[0]);
convert::output_type output0(1, &interm[0]), output1(1, &output[0]);
//convert float to intermediate
convert::io_type_to_otw_type(
io_type_in, otw_type, input0, output0, nsamps
);
//convert intermediate to short
convert::otw_type_to_io_type(
io_type_out, otw_type, input1, output1, nsamps
);
//test that the inputs and outputs match
for (size_t i = 0; i < nsamps; i++){
MY_CHECK_CLOSE(input[i].real(), output[i].real()/float(32767), float(0.01));
MY_CHECK_CLOSE(input[i].imag(), output[i].imag()/float(32767), float(0.01));
}
}
/***********************************************************************
* Test short to float conversion loopback
**********************************************************************/
BOOST_AUTO_TEST_CASE(test_convert_types_sc16_to_fc32){
io_type_t io_type_in(io_type_t::COMPLEX_INT16);
io_type_t io_type_out(io_type_t::COMPLEX_FLOAT32);
otw_type_t otw_type;
otw_type.byteorder = otw_type_t::BO_NATIVE;
otw_type.width = 16;
const size_t nsamps = 13;
std::vector<sc16_t> input(nsamps);
BOOST_FOREACH(sc16_t &in, input) in = sc16_t(
std::rand()-(RAND_MAX/2),
std::rand()-(RAND_MAX/2)
);
std::vector<boost::uint32_t> interm(nsamps);
std::vector<fc32_t> output(nsamps);
convert::input_type input0(1, &input[0]), input1(1, &interm[0]);
convert::output_type output0(1, &interm[0]), output1(1, &output[0]);
//convert short to intermediate
convert::io_type_to_otw_type(
io_type_in, otw_type, input0, output0, nsamps
);
//convert intermediate to float
convert::otw_type_to_io_type(
io_type_out, otw_type, input1, output1, nsamps
);
//test that the inputs and outputs match
for (size_t i = 0; i < nsamps; i++){
MY_CHECK_CLOSE(input[i].real()/float(32767), output[i].real(), float(0.01));
MY_CHECK_CLOSE(input[i].imag()/float(32767), output[i].imag(), float(0.01));
}
}
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