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//
// Copyright 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 "convert_common.hpp"
#include <uhd/utils/byteswap.hpp>
#include <vector>
using namespace uhd::convert;
static const size_t sc16_table_len = size_t(1 << 16);
typedef boost::uint16_t (*tohost16_type)(boost::uint16_t);
/***********************************************************************
* Implementation for sc16 lookup table
**********************************************************************/
template <typename type, tohost16_type tohost, size_t real_shift, size_t imag_shift>
class convert_sc16_item32_1_to_fcxx_1 : public converter{
public:
convert_sc16_item32_1_to_fcxx_1(void): _table(sc16_table_len){}
void set_scalar(const double scalar){
for (size_t i = 0; i < sc16_table_len; i++){
const boost::int16_t val = tohost(boost::uint16_t(i & 0xffff));
_table[i] = type(val*scalar);
}
}
void operator()(const input_type &inputs, const output_type &outputs, const size_t nsamps){
const item32_t *input = reinterpret_cast<const item32_t *>(inputs[0]);
std::complex<type> *output = reinterpret_cast<std::complex<type> *>(outputs[0]);
for (size_t i = 0; i < nsamps; i++){
const item32_t item = input[i];
output[i] = std::complex<type>(
_table[boost::uint16_t(item >> real_shift)],
_table[boost::uint16_t(item >> imag_shift)]
);
}
}
private:
std::vector<type> _table;
};
/***********************************************************************
* Factory functions and registration
**********************************************************************/
#ifdef BOOST_BIG_ENDIAN
# define ITEM32_BE_TO_R16 16
# define ITEM32_BE_TO_I16 0
# define ITEM32_LE_TO_R16 0
# define ITEM32_LE_TO_I16 16
#else
# define ITEM32_BE_TO_R16 0
# define ITEM32_BE_TO_I16 16
# define ITEM32_LE_TO_R16 16
# define ITEM32_LE_TO_I16 0
#endif
static converter::sptr make_convert_sc16_item32_be_1_to_fc32_1(void){
return converter::sptr(new convert_sc16_item32_1_to_fcxx_1<float, uhd::ntohx, ITEM32_BE_TO_R16, ITEM32_BE_TO_I16>());
}
static converter::sptr make_convert_sc16_item32_be_1_to_fc64_1(void){
return converter::sptr(new convert_sc16_item32_1_to_fcxx_1<double, uhd::ntohx, ITEM32_BE_TO_R16, ITEM32_BE_TO_I16>());
}
static converter::sptr make_convert_sc16_item32_le_1_to_fc32_1(void){
return converter::sptr(new convert_sc16_item32_1_to_fcxx_1<float, uhd::wtohx, ITEM32_LE_TO_R16, ITEM32_LE_TO_I16>());
}
static converter::sptr make_convert_sc16_item32_le_1_to_fc64_1(void){
return converter::sptr(new convert_sc16_item32_1_to_fcxx_1<double, uhd::wtohx, ITEM32_LE_TO_R16, ITEM32_LE_TO_I16>());
}
UHD_STATIC_BLOCK(register_convert_sc16_item32_1_to_fcxx_1){
uhd::convert::id_type id;
id.num_inputs = 1;
id.num_outputs = 1;
id.output_format = "fc32";
id.input_format = "sc16_item32_be";
uhd::convert::register_converter(id, &make_convert_sc16_item32_be_1_to_fc32_1, PRIORITY_TABLE);
id.output_format = "fc64";
id.input_format = "sc16_item32_be";
uhd::convert::register_converter(id, &make_convert_sc16_item32_be_1_to_fc64_1, PRIORITY_TABLE);
id.output_format = "fc32";
id.input_format = "sc16_item32_le";
uhd::convert::register_converter(id, &make_convert_sc16_item32_le_1_to_fc32_1, PRIORITY_TABLE);
id.output_format = "fc64";
id.input_format = "sc16_item32_le";
uhd::convert::register_converter(id, &make_convert_sc16_item32_le_1_to_fc64_1, PRIORITY_TABLE);
}
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