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//
// Copyright 2011-2013 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "convert_common.hpp"
#include <uhd/utils/byteswap.hpp>
#include <boost/math/special_functions/round.hpp>
#include <vector>
using namespace uhd::convert;
static const size_t sc16_table_len = size_t(1 << 16);
typedef uint16_t (*tohost16_type)(uint16_t);
/***********************************************************************
* Implementation for sc16 to sc8 lookup table
* - Lookup the real and imaginary parts individually
**********************************************************************/
template <bool swap> class convert_sc16_1_to_sc8_item32_1 : public converter
{
public:
convert_sc16_1_to_sc8_item32_1(void) : _table(sc16_table_len) {}
void set_scalar(const double scalar)
{
for (size_t i = 0; i < sc16_table_len; i++) {
const int16_t val = uint16_t(i);
_table[i] = int8_t(boost::math::iround(val * scalar / 32767.));
}
}
void operator()(
const input_type& inputs, const output_type& outputs, const size_t nsamps)
{
const sc16_t* input = reinterpret_cast<const sc16_t*>(inputs[0]);
item32_t* output = reinterpret_cast<item32_t*>(outputs[0]);
const size_t num_pairs = nsamps / 2;
for (size_t i = 0, j = 0; i < num_pairs; i++, j += 2) {
output[i] = this->lookup(input[j], input[j + 1]);
}
if (nsamps != num_pairs * 2) {
output[num_pairs] = this->lookup(input[nsamps - 1], 0);
;
}
}
item32_t lookup(const sc16_t& in0, const sc16_t& in1)
{
if (swap) { // hope this compiles out, its a template constant
return (item32_t(_table[uint16_t(in1.real())]) << 16)
| (item32_t(_table[uint16_t(in1.imag())]) << 24)
| (item32_t(_table[uint16_t(in0.real())]) << 0)
| (item32_t(_table[uint16_t(in0.imag())]) << 8);
}
return (item32_t(_table[uint16_t(in1.real())]) << 8)
| (item32_t(_table[uint16_t(in1.imag())]) << 0)
| (item32_t(_table[uint16_t(in0.real())]) << 24)
| (item32_t(_table[uint16_t(in0.imag())]) << 16);
}
private:
std::vector<uint8_t> _table;
};
/***********************************************************************
* Implementation for sc16 lookup table
* - Lookup the real and imaginary parts individually
**********************************************************************/
template <typename type, tohost16_type tohost, size_t re_shift, size_t im_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 uint16_t val = tohost(uint16_t(i & 0xffff));
_table[i] = type(int16_t(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[uint16_t(item >> re_shift)], _table[uint16_t(item >> im_shift)]);
}
}
private:
std::vector<type> _table;
};
/***********************************************************************
* Implementation for sc8 lookup table
* - Lookup the real and imaginary parts together
**********************************************************************/
template <typename type, tohost16_type tohost, size_t lo_shift, size_t hi_shift>
class convert_sc8_item32_1_to_fcxx_1 : public converter
{
public:
convert_sc8_item32_1_to_fcxx_1(void) : _table(sc16_table_len) {}
// special case for sc16 type, 32767 undoes float normalization
static type conv(const int8_t& num, const double scalar)
{
if (sizeof(type) == sizeof(s16_t)) {
return type(boost::math::iround(num * scalar * 32767));
}
return type(num * scalar);
}
void set_scalar(const double scalar)
{
for (size_t i = 0; i < sc16_table_len; i++) {
const uint16_t val = tohost(uint16_t(i & 0xffff));
const type real = conv(int8_t(val >> 8), scalar);
const type imag = conv(int8_t(val >> 0), scalar);
_table[i] = std::complex<type>(real, imag);
}
}
void operator()(
const input_type& inputs, const output_type& outputs, const size_t nsamps)
{
const item32_t* input =
reinterpret_cast<const item32_t*>(size_t(inputs[0]) & ~0x3);
std::complex<type>* output = reinterpret_cast<std::complex<type>*>(outputs[0]);
size_t num_samps = nsamps;
if ((size_t(inputs[0]) & 0x3) != 0) {
const item32_t item0 = *input++;
*output++ = _table[uint16_t(item0 >> hi_shift)];
num_samps--;
}
const size_t num_pairs = num_samps / 2;
for (size_t i = 0, j = 0; i < num_pairs; i++, j += 2) {
const item32_t item_i = (input[i]);
output[j] = _table[uint16_t(item_i >> lo_shift)];
output[j + 1] = _table[uint16_t(item_i >> hi_shift)];
}
if (num_samps != num_pairs * 2) {
const item32_t item_n = input[num_pairs];
output[num_samps - 1] = _table[uint16_t(item_n >> lo_shift)];
}
}
private:
std::vector<std::complex<type>> _table;
};
/***********************************************************************
* Factory functions and registration
**********************************************************************/
#ifdef UHD_BIG_ENDIAN
# define SHIFT_PAIR0 16, 0
# define SHIFT_PAIR1 0, 16
# define BE_SWAP false
# define LE_SWAP true
#else
# define SHIFT_PAIR0 0, 16
# define SHIFT_PAIR1 16, 0
# define BE_SWAP true
# define LE_SWAP false
#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, SHIFT_PAIR0>());
}
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, SHIFT_PAIR0>());
}
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, SHIFT_PAIR1>());
}
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, SHIFT_PAIR1>());
}
static converter::sptr make_convert_sc8_item32_be_1_to_fc32_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<float, uhd::ntohx, SHIFT_PAIR0>());
}
static converter::sptr make_convert_sc8_item32_be_1_to_fc64_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<double, uhd::ntohx, SHIFT_PAIR0>());
}
static converter::sptr make_convert_sc8_item32_le_1_to_fc32_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<float, uhd::wtohx, SHIFT_PAIR1>());
}
static converter::sptr make_convert_sc8_item32_le_1_to_fc64_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<double, uhd::wtohx, SHIFT_PAIR1>());
}
static converter::sptr make_convert_sc8_item32_be_1_to_sc16_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<s16_t, uhd::ntohx, SHIFT_PAIR0>());
}
static converter::sptr make_convert_sc8_item32_le_1_to_sc16_1(void)
{
return converter::sptr(
new convert_sc8_item32_1_to_fcxx_1<s16_t, uhd::wtohx, SHIFT_PAIR1>());
}
static converter::sptr make_convert_sc16_1_to_sc8_item32_be_1(void)
{
return converter::sptr(new convert_sc16_1_to_sc8_item32_1<BE_SWAP>());
}
static converter::sptr make_convert_sc16_1_to_sc8_item32_le_1(void)
{
return converter::sptr(new convert_sc16_1_to_sc8_item32_1<LE_SWAP>());
}
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);
id.output_format = "fc32";
id.input_format = "sc8_item32_be";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_be_1_to_fc32_1, PRIORITY_TABLE);
id.output_format = "fc64";
id.input_format = "sc8_item32_be";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_be_1_to_fc64_1, PRIORITY_TABLE);
id.output_format = "fc32";
id.input_format = "sc8_item32_le";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_le_1_to_fc32_1, PRIORITY_TABLE);
id.output_format = "fc64";
id.input_format = "sc8_item32_le";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_le_1_to_fc64_1, PRIORITY_TABLE);
id.output_format = "sc16";
id.input_format = "sc8_item32_be";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_be_1_to_sc16_1, PRIORITY_TABLE);
id.output_format = "sc16";
id.input_format = "sc8_item32_le";
uhd::convert::register_converter(
id, &make_convert_sc8_item32_le_1_to_sc16_1, PRIORITY_TABLE);
id.input_format = "sc16";
id.output_format = "sc8_item32_be";
uhd::convert::register_converter(
id, &make_convert_sc16_1_to_sc8_item32_be_1, PRIORITY_TABLE);
id.input_format = "sc16";
id.output_format = "sc8_item32_le";
uhd::convert::register_converter(
id, &make_convert_sc16_1_to_sc8_item32_le_1, PRIORITY_TABLE);
}
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