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/* -*- c++ -*- */
/*
* Copyright 2020 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "correctiq_swapiq_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
swap_iq::sptr swap_iq::make(int datatype, int datasize)
{
return gnuradio::make_block_sptr<swap_iq_impl>(datatype, datasize);
}
/*
* The private constructor
*/
swap_iq_impl::swap_iq_impl(int datatype, int datasize)
: gr::sync_block("swap_iq",
gr::io_signature::make(1, 1, datasize),
gr::io_signature::make(1, 1, datasize)),
d_datatype(datatype)
{
if (d_datatype != SWAPTYPE_FLOATCOMPLEX) {
gr::block::set_output_multiple(2); // Make sure we work with pairs
}
}
/*
* Our virtual destructor.
*/
swap_iq_impl::~swap_iq_impl() {}
int swap_iq_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
// Constructor guarantees we'll have pairs.
long i;
long noi;
switch (d_datatype) {
case SWAPTYPE_FLOATCOMPLEX: {
noi = noutput_items * 2; // Each complex is 2 floats
const float* in_float = (const float*)input_items[0];
float* out_float = (float*)output_items[0];
for (i = 0; i < noi; i += 2) {
*out_float++ = in_float[i + 1];
*out_float++ = in_float[i];
}
} break;
case SWAPTYPE_SHORTCOMPLEX: {
noi = noutput_items;
const int16_t* in_short = (const int16_t*)input_items[0];
int16_t* out_short = (int16_t*)output_items[0];
for (i = 0; i < noi; i += 2) {
*out_short++ = in_short[i + 1];
*out_short++ = in_short[i];
}
} break;
case SWAPTYPE_BYTECOMPLEX: {
noi = noutput_items;
const char* in_byte = (const char*)input_items[0];
char* out_byte = (char*)output_items[0];
for (i = 0; i < noi; i += 2) {
*out_byte++ = in_byte[i + 1];
*out_byte++ = in_byte[i];
}
} break;
default: {
GR_LOG_ERROR(d_logger, "Unknown data type. Bytes not swapped.");
return WORK_DONE;
}
}
// Tell runtime system how many output items we produced.
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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